Mark Wahlberg was caught swimming with a floatie this week in Barbados ... and by that, we mean his wife Rhea Durham's beautiful ass.

No pants? No problem.

Michael Phelps -- who just finished up a stint at a rehab center -- brought a 6-pack to Christmas.

The Olympic swimmer and his girlfriend Nicole Johnson (Miss California 2010) spent the holiday together ... along with some friends and posed for a hilarious pic.

Phelps posted the pic on Instagram and wrote, "Yep.... I forgot my pjs for the pjs party .... Oops."

Here's a video of ass model Rosa Acosta.

She's been in a Trey Songz music video ... a Drake video ... she was on "Wild 'N Out" ... and a bunch of magazine covers.

She was working out in Santa Monica the other day. We asked her about sports. Good times.

Here's the conversation we had in the office before we published:

Evan: What does she talk about?
Van: Who cares. She's hot. People will watch this video
Evan: Ok.

Enjoy.

Vanessa Bryant takes her Christmas card photo VERY SERIOUSLY -- so seriously in fact that Mrs. Mamba tapped one of the top designers from "Project Runway" to make her dress.

Kobe Bryant's wife called upon MTCostello -- who has designed clothes for huge stars like Beyonce and Ariana Grande.

They got together and picked out MTCostello's signature "Black Widow" gown -- which comes with a $6,500 price tag!!

Vanessa had flirted with a bronze version of the dress during an earlier fitting ... but ultimately, decided to go with black.

Sources close to the situation tell us ... Vanessa has always been passionate about Xmas cards. As one person put it, "She takes great pride and puts great thought into celebrating because she's very religious."

Much like Sony did with North Korea, Sharper Image has caved in its battle with the City of Las Vegas ... and in this scenario, Heidi Klum's boobs are "The Interview."

Sharper Image's new ad campaign features a scantily clad Klum alongside suggestive copy designed to get you to buy the gadgets Sharper Image sells that you never knew you needed.

But Klum's cleavage did not meet Clark County code and the ads were barred from being displayed at McCarran Airport. The crux of the problem ... "the showing of the female breast with less than a fully opaque covering or any portion thereof below the nipple" -- aka underboob.

So Sharper Image submitted toned downed pics, which were approved, and will soon be displayed for all to see.

Who knew Las Vegas was run by prudes?

Britney Spears looks ... different on the cover of Women's Health Magazine, and while many people suspect a Photoshop job -- TMZ has obtained video that shows that's probably not the case.

Sources involved with the photoshoot tell TMZ ... Britney's facial changes can be attributed to a makeup technique called "contouring" ... which accounts for her slimmer nose and more defined cheek bones.

Check out the video ... she looks exactly the same on set as she does in print.

It really is Britney, bitch.

Kylie Jenner gave a bunch of sick kids exactly what they wanted this holiday season ... oh yeah, and she brought some toys too.

Wearing a white, shear, midriff-baring top, a pair of tight, ripped jeans, high heels, and camera-ready makeup ... Kylie showed up Monday with boyfriend Tyga to the Teen Impact Holiday Party at the Children's Hospital Los Angeles.

Maybe not the most appropriate outfit for young kids.

So we gotta ask ...

Kim Kardashian and Kanye West hardly see each other lately, and there are reports it's taking a toll on their marriage. Kim might have the perfect explanation ... or she might be protesting too much!

Depends on how cynical you are, but one thing's for sure -- BOOBS are a great way to open any debate!

"Real Housewives of Orange County" star Vicki Gunvalson's topless Instagram photo was inadvertent ... so she claims.

Vicki posted a photo Thursday AM, thanking Bravo TV for her Christmas Present -- a nice set of headphones.

In the Dept. of Obvious ... even a casual look at the pic reveals Vicki was naked when she pressed the red button. She, however, says she never saw her boobs before posting the photo.

Vicki tells us she was distracted, getting ready for work.

The question ... are you buying what she's selling?

Former "Game of Thrones" hunk Jason Momoa took his man muscles down to Rio de Janeiro ... reminding us why he's the perfect choice to play Aquaman.

Karrueche Tran is a single woman -- at least until she gets back together with Chris Brown for the umpteenth time -- but in the meantime, she's flaunting her single body all over Miami.

It's not hard to see why Chris kept going back.

If there's one thing the Internet knows ... it's that Kate Upton in a bikini (and sometimes out of it) is an easy win -- and the folks at Sports Illustrated just rung up another W.

Kate's been getting a ton of attention for her "Game of War" commercials, which seemingly runs during every commercial break of sporting events.

So, S.I. just wanted to remind everyone they have the hottest Upton footage on the planet ... by posting a throwback video to a 2012 photoshoot.

Thank you, S.I.

Topless photos and videos of Anastasia Ashley are out there somewhere ... after a crook made off with a laptop containing all the revealing footage ... TMZ Sports has learned.

Sources tell us the laptop was snatched from a camera crew that had recently done a photoshoot with Ashley in Palm Beach, FL for Cheeki underwear. We're told someone broke into their van ... and stole a ton of photo equipment, including the laptop.

Ashley posed nearly nude (g-string only) at times ... but the edited final product was only supposed to imply she was naked.

Ashley tells TMZ Sports ... "There's video of me posing in compromising positions from all kinds of angles." She says the raw footage was never supposed to be seen ... but now she's worried about where it will end up.

We're told the crew filed a report with Miami Beach PD.

Ashley says the theft is "a big invasion of privacy. I'll be mortified if they get released."