The Hills star Spencer Pratt picks fight with former costar Lo Bosworth over her wellness brand

Spencer Pratt woke up this morning and decided to pick a fight with his The Hills costar Lo Bosworth.

At issue for Pratt, 41, are 38-year-old Bosworth's Love Wellness ads, which talk about the causes of vaginal infections.

Pratt used a clip of Lo's ad as the background of his video for his rant.

'Oh, my gosh, I'm so excited that Lo found something to focus all her time and energy [on]. Good luck with this amazing business you have,' he said, his voice dripping with sarcasm. 

'But, TikTok, please don't ever put this on my For [You] Page again. I'm just trying to enjoy scrolling on my hike here, and I did not need to know about Lo's infections that she has dealt with,' he said.

Bosworth responded quickly, writing, 'Hi Spencer, we're in Walmart target and Ulta if u ever need us @lovewellness.'

The brand's official TikTok account also replied, throwing shade at Pratt.

'Bye Bye Bloat collab? DM us babe,' the Love Wellness account wrote.

Someone commented that the Love Wellness products were actually 'pretty great' and Pratt jokingly asked for a discount code.

Lo created the PRATTDADDY15 discount code and Spencer trotted off to make a video promoting the brand, which may have given him a cut of his referral code's revenues. 

'Thank you, Lo. I would've liked PRATTDADDY25 percent off for the holidays, but we'll do PRATTDADDY15. So, everyone go shop Love Wellness [and] get your everything in order [and] smelling great,' he said.

Pratt also replied to a TikTok user who said 'Love Wellness slaps,' saying that he's 'happy that people love' the brand but doesn't want to see 'so many ads' for it.

'I just didn't appreciate hearing so much about you-know-who's you-know-what, but I'm glad the products work well,' he said.

Pratt also addressed the rocky history between him and Bosworth, who did not get along during either Laguna Beach or The Hills, and he said nothing has changed that in the 14 years since The Hills went off the air.

In 2018, Bosworth said she had no interest in returning for a reboot of The Hills during an interview with E! News.

After that, Pratt tweeted, 'Lol nobody was calling you for #thehills anything,' and followed that up with a second tweet saying, 'Like for real peeps would be like who dat?'

During an appearance on the Just B with Bethenny Frankel podcast earlier this year, Bosworth recounted her time on the reality TV show.

'We were very young women constantly put into compromised situations where we had to blood sport it out against each other to get through a day of production,' he said.

Bosworth had no interest in drama, which did not make her a good fit for the reality TV space, she noted.

'I served a very specific role, which I'm actually grateful for in hindsight. I didn't have to get into it too much,' she said on the podcast.

Lo added, 'But in the areas where I did, it still kind of haunts me to this day because there's so many stories behind this story everybody saw on television that run very counter to what the public thinks of you.'

She also speculated about why former costar and classmate Lauren Conrad has taken a step back from the spotlight.

'I think that [she was] famous to a degree that whenever anything happened that was negative, the blowback felt so significant and so life changing that you really live with that trauma and it affects you on a go-forward basis in terms of how much you're inclined to share with people,' she reflected.

And Bosworth said it is possible she will get together with her former Laguna Beach costars for a 20-year reunion.

'I sort of talked to a couple people about it because we graduated from high school in 2004.

'It's 2024. It is our true 20-year high school reunion this year, and so in the context of Laguna, I think it would be great to get back together with the old gang,' she said.

Kristin Cavallari, Stephen Colletti, Morgan Smith, Christina Sinclair, Trey Phillips and Dieter Schmitz were stars of the show alongside Bosworth and Conrad.

'I think that everybody's doing really well, everybody is really friendly,' she said of the group.