Hot Bodies

Rihanna blew her top again yesterday -- and this time, the singer stripped down to just her bikini bottoms on the beach in Brazil ... in front of lots and lots of people.

Rihanna wasn't just getting naked for fun though -- not like she's opposed to it -- she was posing in a fashion shoot for Vogue magazine, which apparently continues to do God's work. Keep it up, folks.

Gotta love Brazil ... or as we like to call it, NO BRA-zil.

But while the old man dong was out in full force ... an uncomfortable looking Olivia eventually laughed the whole thing off.

Alexander Skarsgard can even make taking a s**t in sub-zero temperatures look hot -- and the beautiful bastard proved it from the South Pole.

Skarsgard posed naked on a toilet in Antarctica during a race to the Pole last month. One of his teammates posted the pic on Instagram yesterday.

Worth noting ... one of Alexander's competitors was Prince Harry.

The race was eventually called off due to injuries and safety concerns -- but we're pretty sure what Harry's victory pose would be.

Paulina Gretzky has some great genes -- and she was putting them all on display while on vacation in Hawaii yesterday ... rocking a tiny yellow bikini and showing off a whole lot of ass.

The Great One's progeny showed off her slamming body while sporting a Acacia bikini in Lahaina, HI ... where she's vacationing while her pro-golfer fiance -- Dustin Johnson -- plays in the Hyundai Tournament of Champions.

Of course, Dustin found some time to get away from the links to spend a little quality time with his woman ... because ... well ... wouldn't you?

Robert Griffin III's recovery seems to be going well ... 'cause the Washington Redskins QB is stomping around the beaches of Hawaii with his smokin' hot wife.

Since his team didn't make the NFL playoffs, RG3 and his wife Rebecca jetted to the islands for a little R&R ... even playing a little grab-ass on the sand.

Of course, Robert was benched toward the end of the season to avoid re-injuring his already tender left knee.

Kim Kardashian's great ass and post-preg toned body didn't come naturally ... and last night in Beverly Hills she told us her secrets to being a full-blown MILF.

Kim was leaving La Scala with Brittny Gastineau when we asked about the Instagram photos she and Blac Chyna posted hours before ... showing off their hot mom butts after a workout sesh.

A humble Kim had no problem telling us how she got super fit.

Hint: She didn't say photoshop.

Tom Arnold is half the man he used to be, dropping 90 pounds in 9 months -- but he tells TMZ, it wasn't easy ... he had to cut out sugar and bread from his diet and bust his ass exercising.

54-year-old Tom tells us his son Jax -- who was born in April -- is the inspiration for his weight loss. "My son is already cursed with an old dad, so he doesn't deserve to have a fat dad too."

According to Tom, the diet was a huge part, but he also did tons of circuit training, cardio, and took lots of Arnold Schwarzenegger's Muscle Pharm supplements.

Hasta la vista, belly.

Olga Kent is an Italian actress/model ... she also might have the flattest ass we've ever seen.

Kent was frolicking around Miami Beach in a tiny red bikini yesterday ... and flashed a backside that seems to be the yin to Kim Kardashian's yang.

This is it ... the last bikini objectification of the year ... and so, we proudly present -- KATIE HOLMES VS. JENNIFER ANISTON!!!!

Katie was out in Miami, flaunting her post-Tom Cruise physique in a hot pink 2-piece.

Jennifer is still in Cabo ... hangin' out with her man Justin Theroux.

Two hot bodies -- but there can only be one winner.

So, we gotta ask ...

This is Nicole Minetti ... one of the women convicted of wrangling up prostitutes for disgraced Italian Prime Minister Silvio Berlusconi ... and by the looks of these pics, you'd never guess she'd recently been sentenced to 5 YEARS IN PRISON.

According to Italian officials, Minetti was one of the key people who supplied the hookers to Berlusconi's legendary "Bunga Bunga" parties. She's been sentenced to 5 years in the big house ... but that's on hold 'cause she's appealing the case.

In the meantime, Minetti's passing the time by romping around the beaches of Miami in a thong ... just like she did on Christmas day. Which begs the question ... how the hell did she get in the country after she's been convicted???

"Dancing" does a body good ... and Audrina Patridge and Cheryl Burke are the proof.

The ladies are both in Hawaii (on separate vacations) ... flaunting their incredible "Dancing with the Stars" physiques on the beach ... and it's NICE!

Still, we gotta ask ...

Victoria's Secret supermodel Candice Swanepoel shot a photo AND video that fulfilled holiday wishes around the world. But is this the perfect gift?

Of course it is, but just in case you disagree ... enjoy this absurd debate.

'Tis the season to get your jollies ... and you can thank Victoria's Secret angel Alessandra Ambrosio, who stripped down to some red hot Rudolph-themed lingerie on a beach in L.A. yesterday.

If Tyson Beckford's beautiful ripped body doesn't do it for you -- check out Courtney Stodden's massive ... head of freshly darkened hair! Oh, and her boobs too.

Yes, like a young Anakin Skywalker -- we're going to the dark side.

Victoria's Secret model Cara Delevingne is a HERO ... 'cause she just posted video of some of the VS supermodels TWERKING behind the scenes at the fashion show ... and it's awesome.

The Twerkers -- Doutzen Kroes and Joan Smalls.

Both women were hangin' out backstage in their robes, when they decided to start throwing their asses around ... while Cara sang the words to Major Lazer's hit, "Bubble Butt."

The footage was shot back in November, but Cara held it until the show aired on CBS last night.

It's ok ...we forgive you.

Ryan Seacrest's new lady Shayna Taylor nearly FROZE TO DEATH during her first big modeling shoot yesterday -- stripping down to a tiny bikini on an L.A. beach in the middle of the winter -- but even though it was cold outside, the photo shoot was hot as hell.

As we reported, the 23-year-old smokeshow just signed with a huge modeling agency thanks to the publicity she's gotten from allegedly dating the "American Idol" host.

Check the video ... she's a natch ... but she still needs a little coaching from the photographer.