Stars In Heat

Heidi Klum's new boyfriend, 27-year-old Vito Schnabel, went topless yesterday as he palled around in the ocean with Heidi in Tulum, Mexico.

Oh, did we mention SHE WAS TOPLESS TOO?!?!?!?

Schnabel is an art dealer in New York City. He's been previously linked to Demi Moore, Elle Macpherson and Liv Tyler. His father is Julian Schnabel ... director of films like "The Diving Bell and the Butterfly," "Before Night Falls," and "Basquiat."

In other words ... batten down your hatches when Josh pulls into port, ladies!

What isn't Gilbert Grape eating? Leonardo DiCaprio hit the beach last week with his 21-year-old supermodel girlfriend looking rounder than usual ... but the fact is, Leo's so rich and awesome, it doesn't matter.

Days before dancing like a weirdo at Coachella, Leo and his GF Toni Garrn vacationed in Bora Bora. While Toni removed her top and unleashed her boobs, Leo removed his top and unleashed his as well.

And no one cared ... because he's Leonardo DiCaprio.

Seriously, though. We're big fans.

These are the Rihanna photos you've been waiting for your whole life -- down on all fours and bottomless. BOOM GOES THE INTERNET!!!

RiRi was posing for pics in the Hollywood Hills yesterday as part of a photo shoot for a French magazine ... wearing some kind of bikini top and nothing else. To make it even hotter, there was even a guy whose job it was to pour water down her back.

The "no touching" rule did NOT apply for this lap dance -- Lady Gaga shoved her ass in her boyfriend Taylor Kinney's face Friday in NYC ... and his hands were EVERYWHERE.

Gaga -- wearing fishnets and a thong bodysuit -- went full stripper on the "Chicago Fire" star inside 42West's new nightclub BPM. We're told Kinney even spanked her.

A source in the VIP area tells TMZ, Gaga showed up with Kinney just after midnight, and the two were all over each other pretty much the whole time.

Don't stop. Let's party.

Khloe Kardashian and rapper French Montana have been spending a lot of time together ... the kind of time that leads people to ask, "Are they banging?"

We're told French is on the hunt for a new pad and took Khloe along to check one out -- a 4,800 sq. ft. Hollywood Hills home that rents for $29,000/month. It's a 4 bedroom, 4 bath house with a wine and cigar cellar, a sauna, and screening room.

And, they hit up Pink Rhino in Phoenix this weekend where French was a promoted guest. We're told the pair and their entourage went through 10 bottles (on the house, of course) and shelled out $7K on girls.

Kate Middleton and Prince William began their three-week royal tour of New Zealand and Australia today ... and were greeted with a traditional Maori welcome by some of the locals.

Bundchen's bum is undefeated against thongs, so Gisele had to ...

RELEASE THE KRAKEN!

Fitness guru Cara Castronuova isn't very discriminating ... she'll go on a date with ANYONE who's willing to pay the asking price -- $10,000.

Cara -- an ex-trainer on "The Biggest Loser" -- tells TMZ she's raising money for her charity -- Knockout Obesity -- by offering a romantic evening in NYC with anyone who ponies up 10 grand.

The best part ... she's open to men and women.

Cara says she hopes to go on at least 3 dates so she can send 50 overweight kids to fat camp. She's moved by the heartbreaking letters she gets ... including one from a boy who told her he desperately wants to shed lbs so other kids will stop pinching his stomach.

So what do you get for your money? Cara says the date consists of dinner at a really nice place and then seeing the new Rocky musical on Broadway.

But here's the deal ... you have to pick up the tab for dinner ... and pay your own way to NYC. She'll take care of the theater tix.

Amanda Bynes got a side benefit from intensive therapy for schizophrenia and bipolar disorder ... a bangin' body.

Sources familiar with Amanda's treatment tell us ... doctors told her daily exercise was an important part of regaining balance and calm, and it's very clear Amanda has been a good patient.

So this week she's been chillin' in Mexico for Spring Break -- doing it up CABO STYLE.

The trip was a present from her parents, who chaperoned her ... meaning no beer, body shots or wet T-shirt contests.

She's on break from her fashion design school, where she's done incredibly well.

Amanda -- who turned 28 Thursday -- clearly learned a thing or 2 in school, 'cause she looks great in a green bikini!

The worst decision you've ever made doesn't compare to the two women who DID NOT pick Jon Hamm on a dating show waaaaay before he hit it big.

Back in 1996, 25-year-old Hamm looked like Don Draper -- if he was in the witness protection program -- when he went on a show called "The Big Date" ... hosted by Mark L. Walberg, who now hosts "Antiques Roadshow."

The folks at Lighthearted Entertainment unearthed this clip where a surfer dude-looking Hamm
gets passed over for TWO other guys ... one of 'em even had frosted tips!

Leslie Mann went full Robin Thicke on Cameron Diaz last night ... grabbing a handful of booty at the London premiere of their new movie "The Other Woman."

No disrespect to Cameron, but with Kate Upton standing just two feet away ... Leslie made a poor choice.

"Big Brother" star GinaMarie Zimmerman is certainly at home in front of the cameras, and now she wants to pose naked for them ... Playboy's cameras, to be exact.

The former pageant coordinator -- who was famously booted from her job after her racist comments on the show -- tells TMZ her new goal is to be in Playboy. Zimmerman says all her friends feel she's too old to do it, but she's determined to make it.

FINALLY!!! Hard undeniable proof Michelle Rodriguez and supermodel Cara Delevingne are banging each other -- unbelievable video footage of Michelle making out with a topless Cara in the ocean ... A TOPLESS CARA ... IN THE OCEAN.

35-year-old Michelle and 21-year-old Cara were vacationing together in Cancun last week -- and Cara took things to a whole new level, leaving her bikini top on the beach ... while she and Michelle canoodled in the water.

Nude pics of Terrell Owens' estranged wife have popped up on the Internet ... and she's hinting that T.O. may be responsible for leaking them.

The photos of Rachel Snider hit Twitter today showing the ex-postal worker posing for bathroom selfies ... some topless, some bottomless ... and some that look like they're straight out of Hustler.

Gotta say ... some of 'em do make ya think T.O. should try to patch things up.

Snider confirmed the pics are definitely her, but adds they were taken for T.O. ... and intended for his eyes only.

Translation: she thinks he could be connected to the the Twitter handle sending out the pics.

Rachel says she's contacted Twitter HQ to report the user behind the x-rated tweets, but so far they're still up.

T.O.'s rep hasn't responded to our calls for comment.

Warning to Usain Bolt: Don't go thrusting your crotch at people in the U.S.A. because it could be criminal ... that's Ne-Yo's take on it, anyway.

The singer was out in NYC when we asked him about Usain's ridiculously dirty dancing ... called "daggering" -- and admits he's tried the super-sexualized move too.

But Ne-Yo makes it clear ... he only daggers when he's down in Bolt's homeland of Jamaica, where it's socially acceptable.

As for why he doesn't do it stateside ... Ne-Yo says, "In New York it's called something else. It's called rape."