Hot Bodies

Justin Bieber's performance at Sunday night's Billboard Hot 100 Music Festival seemed a little like a male revue show ... as he stripped down slowly, but surely, during his performance.

Kourtney Kardashian ignored the issue of tanlines and donned a strappy bikini as she relaxed Thursday on the beach in St. Barts.

Meanwhile in Mexico, Scott Disick hung out with Joe Francis and Darren Dzienciol, who co-owns 1 OAK.

Being single seems to agree with both of them.

Kourtney Kardashian's Instagram bikini body is like a Drake diss song ... at this point, she's just kicking a man while he's down.

This latest one was snapped while on vacation in St. Barts, with Kourt wearing a swimsuit that seemed to perfectly match her backdrop.

She should have captioned this pic "Back to Back."

Rachel Brathen is Instagram's sexiest yogi -- and with 1.6 million followers, easily the most popular.

Alessandra Ambrosio may not be able to solve Greece's debt crisis ... but her visit to the country is certainly upping its babe factor.

Heidi Klum concedes ... Donald Trump was right when he said she is "no longer a 10" -- but by Heidi's math, she's damn close.

Klum posted a funny response to the recent Trump diss, in a video featuring a guy in a Trump mask ripping off her "10" label to reveal she's now just ... a 9.99.

However you do the math, Heidi's still as hot as it gets.

Jessica Alba's amazing body, and bank account, were on full display in Cancun.

The 34-year-old mother of two was enjoying a fabulous vacation this weekend -- no doubt celebrating her killer figure ... and her Honest Company recently being valued at $1.7 billion!

Cash Warren -- already the luckiest guy on Earth -- just got way luckier.

The "Baywatch" remake is a bad idea that should never be made into a movie ... so says the woman who became famous from the original.

Pam Anderson is scoffing at the Zac Efron/Dwayne Johnson reboot, saying "No one appreciates the remakes."

Pam goes on to say Baywatch was the best time of her life but the 90's were a "simpler, sweeter time" for TV, it won't work on the big screen in 2015.

And if you're wondering if producers asked her to be part of the new movie ... they didn't.

Hopefully producers will take a page from Pam's new book "RAW" and see how great she looks.

Christine Ouzounian -- Ben Affleck and Jennifer Garner's infamous former nanny -- was soaking up some unemployment rays Thursday in L.A. ... in a tiny bikini. Maybe too tiny.

Here's the thing ... showing off her ass isn't gonna get Ouzounian a new job. Not as a nanny, anyway.

Tyga and Kylie Jenner are finally doing it -- all the PDA they want ... during their Mexican turn up for her 18th birthday.

They've got a full fiesta going at Joe Francis' estate ... and a ton of company for the celebration. Kendall Jenner, Hailey Baldwin, Pia Mia and, of course, Joe were all out on the beach on Wednesday.

Interesting, when they brought out the Sea-Doo ... Tyga had no problem riding bitch behind Kylie.

Snapchat founder Evan Spiegel is proof it pays to be a computer/social media geek ... not because of the $2 billion he's worth, but because he's got supermodel Miranda Kerr hanging all over him.

Spiegel, who's only 25, was with his smoking GF Wednesday about to board a flight out of LA -- and Miranda made it clear ... she has no issues with PDA.

Things have been heating up between Evan and Miranda since they first started hooking up in June.

Kylie Jenner left the country after celebrating her 18th birthday to frolic on the beach in Mexico with her pal Pia Mia at Joe Francis' luxury beachfront resort in Punta Mita.

These shots reveal a whole lot of her Jenner-Karadashian assets -- and are way less creepy today than they were last week. Don't worry ... Pia's also 18.

Just when you thought Christina Aguilera's days of showing off her tiny physique were behind her -- the 34-year-old mother of two flashed almost ALL of her still hot bod with a topless photo.

Sporting just pink panties in the pic ... Xtina captioned it, "Felt like it was time to start sharing some personal stuff with you guys."

If this is what she has in mind ... we couldn't agree more.

Warren Buffett brought his Midas touch to a locker room full of women in lingerie ... and football pads -- to deliver a rousing pregame speech.

Buffet paid a visit to the Omaha Heart players of the Legends Football League before their last game against the Chicago Bliss, and did his best to fire up the home team. Even football players know -- when a man worth about $70 BILLION speaks, you shut the hell up and listen!

But more importantly, you gotta see the Oracle of Omaha throwing his arm around the players for pics. He smartly told the photog ... "Take your time. There's no hurry."

Gotta love a good sibling rivalry, and the fact Kim Kardashian's not surrendering ... even though she's pregnant.

Instagram celebs Devin Brugman and Natasha Oakley -- better known as A Bikini A Day -- got their bikini action for Monday in Ibiza, Spain ... giving us a glimpse of how the magic happens.