Jennifer Lopez flaunts maximum cleavage in backless dress after Ben Affleck and Jennifer Garner reunite again

Jennifer Lopez flaunted maximum cleavage in a black-sequin Mônot halter dress while posing in front of her towering Christmas tree on Sunday.

The 55-year-old pop diva accessorized her sexy cocktail attire with a matching $2,100 Tyler Ellis 'Aimee Clutch' and peep-toe heels selected by styling duo Rob Zangardi and Mariel Haenn.

Jennifer - who boasts 389.5M social media followers - strutted her stuff in a video featuring TikTok audio of choreographer Brandon O'Neal saying: 'And 5, 6... believe in yourself!'

Lopez made sure to showcase her famous derrière in the backless creation for her Instagram post captioned: 'Believe in yourself'

Back in May, the JLo Beauty founder boasted on LIVE with Kelly and Mark that her 5ft5in figure was in 'fighting shape' despite her age: 'I'm the thinnest I've ever been.'

Jennifer's video was reposted by her agent Elaine Goldsmith-Thomas as well as her nail artist Tom Bachik and it received glowing (limited) comments from her fitness trainer Tracy Anderson and make-up artist Scott Barnes.

Lopez's revenge dress came as her estranged fourth husband Ben Affleck and his ex-wife Jennifer Garner spent Thanksgiving together volunteering at The Midnight Mission and they also plan on spending Christmas with their three children.

And on Saturday, the 52-year-old filmmaker was spotted driving in Brentwood with the 52-year-old Deadpool & Wolverine action star - who's still dating John Miller - in the passenger seat.

'We'll definitely go see The Nutcracker, because that is a huge part of Christmas for me and for my kids — thank goodness I've drilled it into them,' Garner gushed to People on December 2.

'And just being together with family.'

The two-time Grammy nominee will likely spend Christmas celebrations with her 16-year-old fraternal twins - Emme Maribel Muñiz and Maximilian David Muñiz - from her seven-year marriage to ex-husband #3 Marc Anthony, which ended in 2011.

Jennifer stars as struggling single mother-of-five Judy Robles in William Goldenberg's Anthony Robles biopic Unstoppable, which starts streaming January 16 on Prime Video after hitting limited US/UK theaters last Friday.

The drama about the disabled wrestling champ currently has a certified fresh 78% critic approval rating out of 45 reviews on Rotten Tomatoes.

For her emotional performance, Lopez will be honored with the Legend & Groundbreaker Award during the 36th Annual Palm Springs International Film Festival's Impact Awards brunch on January 4 - according to Variety.

'As an actor, it's not about doing an imitation – I think that’s the worst thing you could do,' the Kamala Harris campaigner told The Guardian last Friday.

'It's about really taking the essence and understanding, emotionally, what's going on, and understanding that as a person, and being able to bring that through. I learned this when I did the movie Selena, actually.

'Edward James Olmos told me "Take all of it in, get everything you can." And this was when we were filming the big scene in the Astrodome – he goes, "Throw it all away. Just do it. It's in there."'

Even Ben, who executive produced Unstoppable, told ET on November 3: 'Jennifer is spectacular.'

Affleck is also producing Bill Condon's upcoming remake of Kiss of the Spider Woman in which Lopez takes on three roles - Leni Lamaison, Marta, and Spider Woman.

The ex-girlfriend of Diddy filed for divorce from the two-time Oscar winner on August 20 - on what would've been the second anniversary of their Georgia wedding, and they still have to unload their $68M marital megamansion in Beverly Hills.

The couple formerly known as 'Bennifer' originally met on the LA set of Martin Brest's box office bomb Gigli in 2001, abruptly split three days before their 2004 wedding, and began surreptitiously texting each other again in February 2021 - two months before she ended her engagement to Alex Rodriguez.

In September, Deadline reported that Jennifer will return to her beloved rom-com genre to produce and star in Netflix's Office Romance with Ted Lasso alum Brett Goldstein, who co-wrote the screenplay with Joe Kelly.