Guess who! The most BAFFLING celebrity transformations in 2024

Throughout 2024, Hollywood celebrities left fans shocked with unrecognizable transformations - from dramatic weight loss to bold hairstyles. 

Some stars dropped pounds this year, such as Jessica Simpson and Christina Aguilera, but have brushed off Ozempic speculation amid their weight loss journey. 

Others, however, have admitted to taking the weight loss drug in 2024, including Kathy Bates, Rebel Wilson and Brooks Nader. 

A number of A-listers were also surrounded by plastic surgery rumors this year, such as Sabrina Carpenter and Tori Spelling. 

Some celebrities altered their look by opting for bold haircuts or choosing to dye their locks eye-catching colors. 

With 2025 just around the corner, DailyMail.com takes a closer look at this year's biggest transformations among Hollywood A-listers. 

Jessica Simpson 

Jessica Simpson, 44, left fans baffled as she looked nearly unrecognizable in social media posts she uploaded over the past year. 

The TV personality notably underwent a 100lb weight loss transformation after welcoming three children to the world. 

Last year, she shut down Ozempic speculation and expressed to Bustle that she was able to drop pounds through 'willpower.' 

'I'm like, do people want me to be drinking again? Because that's when I was heavier. Or they want me to be having another baby? My body can't do it.'

Earlier this year in August, Simpson stated on Instagram that she has been alcohol-free since 2017 - which also aided in losing weight. 

She also exercises by walking and doing full-body workouts while also focusing on a diet that consists of protein and fiber. 

Jessica's personal trainer, Harley Pasternak, informed People, 'It's three meals and two snacks a day, and each meal has protein, fiber and fat, and snacks are protein and fiber or protein and fat.' 

'She'll have foods that are very (flavorful) that are healthier versions of things like a tortilla soup or Tex-Mex.'

He added, 'And if she has a birthday party one night and a date night another night, she's going to indulge both of those nights, but that's it. It's about balancing in a way that doesn't make it painful or too much of a departure from your life before that.' 

Aside from social media, Simpson showcased her slimmer figure on various outings - such as when she stopped by LAX airport in May. 

Earlier this month, the star uploaded a picture to Instagram as she struck a pose inside a music studio. 

However, fans expressed that they were not able to recognize the star - who wore a white miniskirt and matching cropped top. 

She additionally wore a black, fishnet bodysuit underneath and also sported platform, heeled boots while lounging in a chair. Her blonde locks were parted to the side, and cascaded down past her shoulders in light waves. 

Followers quickly jumped to the comment section to share their thoughts, with one typing, 'Is Jessica in the room with us?' 

Another penned, 'What has she done to herself? This doesn't even look like her,' while one shared, 'I don't even recognize this person.' 

'I thought this was Ivanka Trump at first,' a fan added, while another wrote, 'I thought it was Kim Zolciak.' 

Lindsay Lohan 

Lindsay Lohan, 38, showcased her unrecognizable new face this year - prompting speculation that she had a $300k plastic surgery glow-up. 

Her youthful transformation first came to light in October in promotional photos for her holiday film, Our Little Secret. 

Fans were left with many questions over her smooth visage at age 38, and on Instagram, one fan shared, 'She looks like she's 20 with zero wrinkles.'

Another pointed out, 'She looks so different compared to her in Falling for Christmas and Irish Wish.'

'Lindsay the beauty. That's what it means to give up all bad habits and start looking gorgeous,' one typed. 

In November, she left fans floored once again while at the premiere of the movie in NYC, with some wanting to know the secrets to her 'glow-up.' 

One wrote on X, 'I'm obsessed with Lindsay Lohan's glowup,' while another shared, 'I need to drink whatever Lindsay Lohan is drinking.' 

'Ok but seriously who was the surgeon that did Lindsay Lohan's face. She looks fantastic,' one penned. 

That same month, an aesthetics doctor by the name of Jonny Betteridge, claimed that the Freaky Friday actress might have spent around $300k in cosmetic procedures. 

He claimed that she may have undergone 'some degree of surgical facelift' - but added she could have gone for a less abrasive procedure. The doctor also claimed she had 'botox, lip lift, lip fillers, and veneers.'

In regards to her smooth skin, Betteridge stated that she may have had 'laser resurfacing' done and had 'a dermatologist led skincare routine.' 

'And the cost of this, if you combine everything together, would be in the range of $200-300K.' 

Not long after the doctor's claims, Lindsay's own father Michael broke his silence on his daughter's glow-up. 

He told Page Six in late November, 'Lindsay never had any plastic surgery done ever. Her look [is] so natural - just like her talent.' 

But he did tell the outlet she has undergone 'peels, fillers and Botox.'

When it comes to skincare, Lindsay opened up told Allure about her makeup routine. 'If I wear anything, it's Giorgio Armani Silk foundation or Kevyn Aucoin concealer. Maybe some eyeshadow if I'm going out, and Westman Atelier mascara.' 

'One thing I've embraced more since becoming a mom is going out naturally and not feeling the need to put something on my face all the time.'

She said, 'I think we live under pressure to look made-up, but I don't feel that way anymore. I just want to look at myself and love myself for who I am.' 

At the end of the day, Lohan tends to use, 'Aveeno face wipes, some Avène face wash and then the redness cream at night again because after I take everything off, I get a little pink.'  

Christina Aguilera 

Christina Aguilera, 44, has also looked unrecognizable throughout 2024 amid facelift and Ozempic rumors. 

The Genie In A Bottle songstress first sparked Ozempic rumors back in May of this year as she showed off her 50lb weight loss.

'So Christina Aguilera found an Ozempic pen and now she just needs to find a pen to give us a classic hit,' another also penned.

However, others came to her defense, with one writing, 'All this talk about Christina Aguilera and her body is really gross. Christina has always been thin, she was naturally thin as a teenager.'

'Her body fluctuated throughout the years as it does when [one gets] older, live[s] and [has] kids. Ozempic or not. She looks amazing. Leave her alone, f***.'

Following the speculation, she has since commented on the 'media's obsession' with her weight over the years during an interview with Glamour in August.

'When you're a teenager, you have a very different body than when you're in your 20s,' she informed the outlet.

'I started to fill out, and then that was unacceptable because it was like, "Oh, she's getting thicker." Then I had industry people: "They liked your body and how you were as a skinny teenager."'

However, as she has grown older, Christina revealed that she does not let comments about her weight affect her.

'I have a maturity now where I just don't give a f*** about your opinion. I'm not going to take it on.'

The mother-of-two added, 'It must be your responsibility to take up your space. Other people's opinions of me are not my business.'

In October, Aguilera further sparked concern from fans as she attended a Barry's Bootcamp event.

She shared a video of herself during the festivities wearing a fitted bodysuit and over-the-knee, black boots.

In reaction to the clip, one fan typed out on social media, 'Sometimes tryna go back to your old size is not a good look. She looks sick.'

Another further expressed worry by adding, 'This also isn't her old size. I think she might be the skinniest she's ever been. Look at her arms.' 

Cosmetic doctors have also suggested the singer's new look is indeed likely a result of a 'miracle' weight loss jab, as well as facial surgeries.

London-based aesthetics doctor Dr Jonny Betteridge previously said he suspects the mother-of-two has undergone a face lift, eyelid surgery and extensive dental work.

'The change in weight in such a short period of time could be attributed to Ozempic use and I also think she would have dissolved all the filler in her face before then undergoing some surgical treatments,' he said.

Lizzo 

Lizzo, 36, has also undergone weight loss transformation in 2024 - and has kept her fans updated with her journey on social media. 

Last month, she looked unrecognizable as she posed for a snap while sitting in the backseat of a vehicle. 

She showed off her slimmer waistline while gazing up towards the camera for the selfie while also being embroiled in Ozempic rumors. 

Some fans commented on her changing appearance over the past months, with one writing, 'I love how everything you post a new picture, there's significant difference.' 

Another added, 'She definitely using a weight loss drug on top of working out,' while one shared, 'Lizzo be eating Ozempic.' 

In September, the Truth Hurts singer continued to showcase her dramatic weight loss as she gave her fans a glimpse of her toned figure in a TikTok video. 

Social media users jumped to the comment section to share their thoughts on the star's weight loss, with one typing, 'U LOOK SO GOOD GIRL.'

Another fan wrote, 'the difference is insane!! so proud of u,' while one added, 'Ok bestie drop the routine.'

She then shut down 'Ozempic allegations' in a separate post shared to her main Instagram page. 

In the post, she shared a short reel as she posed wearing a colorful, satin robe while her hair was pulled back into a low up do.

She added text towards the bottom which read, 'When you finally get ozempic allegations after 5 months of weight training and calorie deficit.'

Lizzo then shared a screenshot of a comment from a social media user where they accused her of taking ozempic or 'coke.'

The songstress had been promoting pieces from Yitty earlier this week in a clip, and had written, 'What's is it… THE BRAIDS?! Cotton Bodysuit by @yitty.'

The troll had typed in the comment section, 'did she use ozempic or did she snort coke.'

In response, the Grammy winner wrote, 'whyyyy do u follow me?' followed by four crying face emojis.

Others came to Lizzo's defense, with one typing, 'Why are we ozempic shaming?  Would you shame someone on antidepressants?' 

But in October, the performer got candid with her followers about 'overeating' and said she felt 'really bad about it.'

'I overate yesterday and im feeling really bad about it. Im trying to remind myself that my body needed that nourishment.' 

She continued, 'And if my body deserves comfort then my brain deserves comfort too.' 

Lizzo told The New York Times this year, 'I'm taking time every day to put some love into my body.'

'There is never a day when I regret taking a walk or doing some pilates. I've been methodical, losing weight very slowly.' 

Kathy Bates

Kathy Bates, 76, underwent a dramatic 100lb weight loss which she has showcased in recent months. 

The Misery actress notably opened up about her journey and broke her silence on Ozempic speculation back in October during an interview with People. 

Over the past seven years, the star dropped a total of 80lbs after focusing on a healthier lifestyle, and lost an additional 20lbs after using Ozempic.

She expressed to the outlet, 'There's been a lot of talk that I just was able to do this because of Ozempic.'

'But I have to impress upon people out there that this was hard work for me, especially during the pandemic. It's very hard to say you've had enough.'

Bates was inspired to put her health first after being diagnosed with type 2 diabetes back in 2017. 'I ate because I was afraid, and I ate because it was a FU to my self-esteem.'

'[Diabetes] runs in my family, and I'd seen what my father had gone through. He had had a leg amputation. One of my sisters is dealing with it very seriously, and it terrified me. It scared me straight.'

Kathy made changes to her diet and admitted to the outlet that she 'used to eat terribly.'

Back in September, Bates further discussed her weight loss journey while talking to Variety amid speculation from fans that she used Ozempic.

During the interview, she gushed about her role in Matlock and explained that prioritizing her health as well as losing weight helped her keep up with the filming schedule.

'It's helped me tremendously that, over the last six or seven years, I've lost 100 pounds,' Bates expressed. 'I don't think I've been this slim since I was in college.'

Kathy stated that she was at her heaviest weight back in 2011 when she was starring in the NBC series, Harry's Law, and admitted, 'I had to sit down every moment that I could.'

'It was hard for me to walk. I'm ashamed I let myself get so out of shape, but now I have a tremendous amount of energy.'

Bates has previously opened up about her weight loss and in 2019, talked to Extra about the inspiration behind putting her health first.

'This is the best health I've been in in years and I'm so grateful - it's a miracle,' she told the outlet at the time after losing 60lbs.

The Titanic actress explained, 'I was facing diabetes - it runs in my family - and I really didn't want to live with that.'

Kathy said she learned, 'After you eat for 20-30 minutes, you experience an involuntary sigh.'

'It's communication between stomach and brain telling you you had enough…and what I discovered is if you listen to that sigh and push that plate away for just five minutes, you realize you're satisfied and you don't have to eat more.'

In 2003, the star was diagnosed with ovarian cancer and later battled breast cancer after her diagnosis in 2012.

She underwent a double mastectomy, but 'developed a disease called lymphedema after that.'

Lymphedema occurs due to 'tissue swelling caused by an accumulation of protein-rich fluid that's usually drained through the body's lymphatic system,' per the Mayo Clinic.

Kim Kardashian

Kim Kardashian, 44, underwent a transformation of her own this year and briefly ditched her natural brunette locks for a dark blonde look. 

The TV personality opted for the bold hairstyle while starring in a SKIMS campaign earlier this month for the Winter Heat collection. 

The star - who has previously gone platinum blonde in the past - also dyed her eyebrows the darker blonde color. 

Kim appeared to be imitating French actress, Brigitte Bardot - however some social media users did not see the resemblance. 

Instead, one fan penned on Instagram, 'I thought you was Beyoncé,' while another added, 'Thought it was Beyoncé for a sec.'

'Why are you dressed up like Beyoncé lol,' one shared in the comment section of the SKIMS post, while another pointed out, 'It's giving Shakira.' 

Kardashian tested other hair colors in 2024, and a few months earlier in October, she shocked fans with long reddish locks to announce a new makeup product under her SKKN brand: a Silk Matte lipstick. 

She also added freckles on her nose for the photo session to promote the latest item for SKKN. 

Rebel Wilson 

Rebel Wilson, 44, underwent a weight loss transformation which she showcased this year after dropping 80lbs. 

The Pitch Perfect star lost the weight beginning in 2020 after taking a 'year of health' and while talking to Us Weekly in June, she talked about her past emotional relationship with food.

'There's no magic fix. I'd been on diets. I've been really good [about] exercising pretty much my entire life.'

She added, 'For me, it was the emotional element that I'd never looked at. I'd kind of been, like, "Emotions…Ugh, I don't want to talk about things."'

In May during an appearance on Loose Women, Wilson opened up about what had initially prompted her to embark on the weight loss journey. 

She expressed at the time, 'I do believe in body positivity and beauty in any shape and size.' 

'Didn't think being bigger stopped me from anything but what I was ashamed of was, these unhealthy eating behaviors, which was basically normally late at night by myself.'

She added, 'What really motivated me, it was actually not for me, not for my own physical appearance or health, but it was really when I went to see a fertility doctor and he said that if I was healthier, I'd have a much better chance of having a child.'

'I guess logically, I knew at the time I, you know, struggled with obesity and, "Do I change my health for the better?"'

Rebel continued, 'But then I'd lose this pigeonhole I had in the business and I might lose my career.' 

One month earlier in April, the actress revealed that she took Ozempic amid her weight loss journey, but no longer takes the type 2 diabetes drug. 

She told The Sunday Times, 'Someone like me could have a bottomless appetite for sweets, so I think those drugs can be good.'

Wilson also stated, 'Basically no one apart from my mom wanted me to lose weight. People thought I'd lose my pigeonhole in my career, playing the fat funny character, and they wanted me to continue in that.'

In May while on The Diary Of A CEO podcast, the star further reflected on briefly using Ozempic to help maintain her weight loss - and not to lose pounds. 

'I wish I had known about it in 2020. If I had known about it, I would have tried it, one hundred percent.' 

'(It was) more for when I had lost like, 35 kilos, I was like, I can't continue working out and having this level of focus. And I was very worried that the weight would come back on,' she added. 

The actress continued, 'Now I have gained back 10 kilos, I guess because of having a baby and I just can't work out to the level that I used to. And so I tried it for a few months for weight management, I guess you could call it.'

'I had an unlimited ability to eat sweets and chocolates and ice cream and stuff and that drug helped for me to feel full whereas, I would not feel like that before. I could eat a ton.'

Following her dramatic weight, Rebel has been candid about gaining some weight back - with 'stress eating' being one of the factors. 

In a candid Instagram post in January, she wrote to her fans, 'Working really hard has meant that, coz of all the stress, I've gained 14kgs (30 pounds)! It makes me feel bad about myself… it shouldn't… but it does.'

'I'm really proud of the work I've been doing on new movies and my memoir, it's just been a LOT and I've lost focus on my healthy lifestyle.' Back in April, Wilson notably published her memoir, Rebel Rising. 

'Anyone else going through the same thing?' she concluded to her followers. 

Katy Perry 

Katy Perry, 40, sparked Ozempic rumors this year when she flaunted her incredibly toned physique after welcoming her daughter, Daisy, in 2020 - whom she shares with Orlando Bloom. 

The speculation first arose when she began promoting her latest album, 143, which was released in September. 

In June, she teased her fans with the album cover as she struck a pose wearing a skimpy white bikini. 

Social media users quickly shared their thoughts, with one penning on X, 'I hate that like every celebrity, even ones who [are] already thin, is on Ozempic now.'

Another shared, 'Woahhhhhhhhhhhhhu! Slay my Ozempic cutie. Looking snatched,' while one added, 'AI or Ozempic.'

Earlier this month, Perry commented on her slimmer figure during an interview with ITV and discussed how she achieved her toned frame. 

'I hear that my biceps were going around the internet,' Katy said, and when asked how she stays in shape, the singer admitted: 'Well I hate working out. I actually do.'

She added, 'You know what I love to do, I love to dance, swim and do things that don't feel like working out.' 

'I hear that my biceps were going around the internet. So that's a little bit from my swimming I will say I am quite a good swimmer.' 

'But seriously it's been a while since I have been on tour and by the time I go on tour it will be eight years. So I actually probably should go to the gym. The tour is going to be a dance party and everyone is invited.'

In regards to her diet, the Dark Horse performer explained that Bloom was the chef in their home, stating, 'Orlando is a better cook than me, but I make a crazy avocado toast.' 

In June, a source told DailyMail.com that the secret behind Perry's weight loss was due to the Lord Of The Rings actor. 

'She loves savory food, she loves chicken nuggets and sugary food, but recently she has been way more disciplined and has chosen to follow Orlando's diet.' 

The insider added, 'She has been working out more because she wants to do some shows to support her upcoming album, so now is the time to look great.'

'Orlando has been her right-hand man and has helped her out. They eat the same and work out the same. She has cut out tons of processed food and doesn't drink that much. She has been looking incredible because she is sticking to the new routine.'

The source also shut down claims that Perry used a weight loss drug, such as Ozempic.

'Her weight loss has nothing to do with any help from Ozempic or weight loss drugs. She just worked hard and is eating better than ever.'

Earlier this month, Katy appeared gaunt as she walked the red carpet at the iHeartRadio's Q102's Jingle Ball concert in Philadelphia. 

She showed off her slimmed-down figure wearing a semi-sheer red dress that contained a thigh-high slit on the left side for a sultry flare. 

Ariana Grande 

Ariana Grande, 31, sparked worry from fans this year while promoting her latest film, Wicked, due to her 'fragile' and 'unhealthy' appearance. 

While attending various red carpet and press events, social media users were quick to point out her changed appearance. 

Earlier this month, the singer became emotional during an interview with French influencer and journalist Sally - who had asked Ariana how she 'copes' with criticism on her looks being in the spotlight. 

'I've been kind of doing this in front of the public... a specimen in a petri dish really since I was 16 or 17. So I have heard it all,' she answered. 

'I've heard every version of it, of what's wrong with me. And then you fix it and then it's wrong for different reasons but that's everything from even just the simple thing, your appearance, you're young and you're hearing all those things.' 

Grande added, 'It's hard to protect yourself from that noise. And it's something that's uncomfortable no matter what scale you're experiencing on.' 

'Even if you go to Thanksgiving dinner and someone's granny says, "Oh my God you look skinnier! What happened?" or "You look heavier! What happened?"'

'That is something that is uncomfortable and horrible no matter where it's happening, no matter the scale it's happening on. I think in today's society there's a comfortability that we shouldn't have at all,' the actress further expressed. 

'Commenting on other's looks, appearance, what they think is going on behind the scenes, or health, or how they present themselves. From what you're wearing to your body to your face to your everything.'

The former Nickelodeon star added, 'There's a comfortability that people have commenting on that that I think is really dangerous. And I think it's dangerous for all parties involved.' 

Fans have shared their opinions over the past months about her appearance, such as when she attended the L.A. premiere of Wicked last month. 

One typed out on X, 'She's skin and bones,' while another social media user wrote, 'Ariana looks unhealthily skinny.' 

'I love Ariana and I don't think people should comment on other people's bodies at all, but there's no way you can look at her and not think she's not healthy. I really hope she's OK,' one shared. 

Experts have also weighed in on Ariana's major transformation, with some claiming it could be due to a multitude of reasons, such as losing pounds, fillers and no longer tanning her skin. 

Amish Patel, an aesthetics practitioner and skincare expert, attributed to her changing look to dying her locks while talking to DailyMail.com. 

'Dying your hair from dark to blonde and bleaching your eyebrows will make you look radically different.' 

He added, 'Ariana is petite with a naturally small frame. With a grueling work schedule, it's not so easy to maintain a healthy lifestyle with plenty of rest.' 

'Especially as she will be in the middle of doing the rounds of press junkets and touring and promoting the film.

'Ariana looks stunning in her promotional photos and trailer for the film, but as any celebrity will know, working long hours, flying around the world, and unflattering paparazzi photos will never be a complimentary combination!'

The star herself previously admitted to doing both Botox and fillers in the past - but said she stopped back in 2018. 

Plastic surgeon, Mark Solomos, stated, 'Ariana has been genetically blessed with very attractive and petite features and she still is very beautiful, however she does look quite different.

'Firstly there's noticeable weight loss which because this automatically shows up in her face, I would suggest she's had some fillers to replenish the fat loss and add volume in and around the cheek area.'

Solomos continued, 'I'd also suggest she's had a small amount of filler in the lips as they are noticeably fuller, giving quite her quite a different look.'

'Furthermore, possibly a small amount of Botox has been used to smooth the forehead around the eye area to give a wider appearance.

'But of course, the blonde hair and change of make-up pallet can equally made someone look very different in appearance alongside minor tweakments.'

A separate insider has previously told DailyMail.com that her boyfriend and Wicked co-star, Ethan Slater, is also 'concerned' for the actress, but 'feels helpless' over the situation. 

Sabrina Carpenter

Sabrina Carpenter, 25, has been embroiled in plastic surgery rumors this year while in the spotlight throughout 2024. 

The singer had a busy year, from releasing her album Short n' Sweet in August, to embarking on a tour that kicked off in September. 

However, some fans have noticed her changed appearance - prompting mounting speculation that she has undergone surgery in the past. 

In August, a plastic surgeon named Dr. Gary Linkov, claimed that he believed the star began getting work down at the age of 20 - and estimated she has spent around $40,000 in cosmetic procedures. 

'In 2019 at the age of 20, Sabrina seems to be using make-up to highlight certain aspects of her face,' he said during a YouTube video.   

'But I also see some signs here of the potential introduction of lip filler, both to the upper lip and to the lower lip, to add some hydration and volume.'

Linkov added, 'And in 2024 at the age of 25, when I look at Sabrina's lips, to me the upper lip looks more arched - and that is probably due to the continued use of filler.'

'This was likely done with small, tasteful, amounts of filler over years to create this appearance.'

'This is not something that you just go in, get one syringe of filler or two syringes of filler at one time and call it a day. This is something that's done gradually, with a very calculated approach.' 

Linkov also claimed that he felt Carpenter may have gotten a nose job done as well.

'Many celebrities will actually leave some convexity to their nasal bridge and instead just get their tip more refined. That's harder to spot than when the whole nose is re-done. These results are less obvious.'

Plastic surgeon, Dr. Jonny Betteridge, shared on TikTok, 'She now has a more heart-shaped appearance to her face, often achieved by using dermal fillers to the cheekbones and chin.'

Despite the surgery rumors circulating around, the Espresso songstress herself has yet to address the speculation.