Hot Bodies

Never wanting to miss Upper Body Day, 65-pound Justin Bieber attempted a pull-up in Brazil on Tuesday -- and nearly burst every capillary in his face.

"Thor" star Jaimie Alexander blew everyone's mind by wearing a dress that barely covered her lady parts to the premiere ... a move we applaud.

Particularly for its attention to side-boobage!

So ... Jaimie Alexander won the "Thor" premiere last night.

The 29-year-old actress -- who plays Lady Sif in the movie -- rolled up to the El Capitan Theater in Hollywood wearing a dress that BARELY covered her lady junk.

Asgard ... meet Ass-guard.

Justin Bieber is kicking himself right now ... because ex-girlfriend Selena Gomez and her perfect 21-year-old ass just hit Miami Beach in this bikini.

Beats stripper ass any day of the week.

Kim Kardashian started an ass-selfie trend ... 'cause after she shared her bikini-wedgie with the world ... ANOTHER wanna-butt celeb is following suit.

This time, the chick showing off her donk is Mercedes "MJ" Javid from "Shahs of Sunset."

It's definitely a change of pace from Kim ... and pro surfer Anastasia Ashley, who beat MJ to the punch with a butt-selfie last week.

Butt-selfies -- sometimes they're not all they're cracked up to be.

Rihanna's sexy vacation pics sent our minds off to the magical Land of Hypotheticals -- where you can ponder just how much danger you'd expose yourself to ... in order to get with RiRi.

Of course we'd never have a shot in hell of being near her -- so this game's all we got.

Here's Rihanna ... bent over a pole while wearing a tiny bikini ... in a series of hot poolside photos she just took while hanging out in Greece.

There's not really much more to say ... so, we'll just go with "Ef̱charistó̱" ... which, we're told, means "thank you" in Greek.

Hours before Pauly D knocked up Amanda Markert, they were both raging at a crazy pool party in Vegas ... and TMZ has several pics of the boozy scene right before the drunken conception.

The two met at the legendary Rehab pool party at the Hard Rock Hotel in the summer of 2012 ... Pauly was working the DJ booth and Amanda was partying her face off in a smokin' hot bikini.

At one point during the party, Amanda somehow got on stage (probably because she's hot) ... and sprayed down the crowd with a bottle of champagne. Later she was seen double-fisting novelty-sized cocktails.

Soon after that, she got some one-on-one time with Pauly -- and 9 months later she gave birth to his daughter. A true love story ...

But the connection they had in Vegas stayed in Vegas ... 'cause now Pauly and Amanda HATE each other's guts and are at war over custody and child support.

Vegas baby, VEGAS!!!

She's been naked for Playboy ... and donned itsy-bitsy bikinis for Sports Illustrated ... so it's no wonder Stephanie Seymour wasn't shy when it came to trying on lingerie in Italy yesterday.

The 45-year-old model grabbed some racy outfits while shopping at Agent Provocateur in Milan with her 66-year-old husband Peter Brant ... and tried them on right in front of the store window. It was awesome.

FYI -- Peter Brant is a paper mogul who happens to be a frickin' BILLIONAIRE!!!

So, good for him ... and good for her.

"The Bachelor" contestant Nikki Ferrell is doing everything she can to convince Juan Pablo Galavis she's THE ONE by flaunting her perfect 10 bikini bod.

Great tactic, Nikki! It's working ... on most of us, anyway.

This hot piece of model ass belongs to Nikki Ferrell ... one of the chicks gunning to bang new "Bachelor" Juan Pablo Galavis ... and from the looks of things, she's a frontrunner.

Nikki (according to various reports) is a 26-year-old model from Kansas City ... who was spotted with the former pro soccer player in Miami this weekend.

Galavis appeared on "The Bachelorette" last season, but didn't crack the final 5.

Sometimes, ya gotta lose to win.

39-year-old Kate Moss isn't holding back before her big Playboy spread in January, removing her bikini top on the beach in Jamaica yesterday -- and she doesn't look half bad.

FYI, Moss will be gracing the cover of Playboy's 60th anniversary issue ... the same month she turns 40.

Jamaican us crazy.

Kate Middleton allegedly had a baby 3 months ago -- but there is zero proof of that in these pics of the Duchess of Cambridge flashing her royal midriff all over a volleyball court.

Prince William's wife showed up for a public appearance in London yesterday, sporting wedge heels, and a banging bod that made everyone forget she was ever pregnant.

Kate gave birth on July 22 to Prince George ... and obviously hit the gym on July 23.

Women ... begin hating. Guys ... continue wishing you were Prince William.

If you think Kanye West is proprietary about Kim Kardashian's ass, think again, because he clearly believes it's awesome and is glad she's sharing it with the world.

We're told his response when he saw Kim's Instagram pic was that he loves having a hot chick.

Kanye retweeted the link to the photo and wrote, "HEADING HOME NOW." In case his message isn't clear ... it was put to us this way ... he's proud of it because it's his girl.

Kanye West -- into sharing.

Kim Kardashian's gargantuan ass is back in working order ... and last night, she let the world know ... with a backside selfie on Instagram

It's the first butt-selfie Kim's taken since giving birth to Kanye West's baby North back in June.

Kim's been on a serious sexuality kick lately -- on the most recent episode of her reality show, she talked about wanting to pose NAKED asap ... saying, "As soon as I get in shape, the first thing I want to do is Playboy or some nude shoot. I just wanna walk down the street fully naked."

Looks ready to us.