Rob Gronkowski NFL Star Hosts Topless Pool Party

OK, so HE was the one who went topless ... but DAMN.

New England Patriots tight end Rob Gronkowski ditched his shirt ... and donned a pair of d-bag shades ... to host the Hot 100 party at Wet Republic on Vegas this weekend.

Of course, Rob isn't shy about his ridiculous physique ... dude tore off his shirt at a Super Bowl after-party back in February ... a move that was highly scrutinized 'cause his team had just LOST.

Thanks to our pals at SpyOnVegas.com for the pics.

Justin Bieber Flashes His 'Work Out' Abs!

Here's 18-year-old pop sensation Justin Bieber -- and his boy abs -- on the "Today" show on Friday (left) -- and fitness guru/former star of the Bravo reality series "Work Out," Jackie Warner (right).

They can really stomach each other.

We're just sayin'.

Ultimate Butt War Team Coco vs. Team Kim K.

A photo of Coco's voluptuous backside ignited an intergalactic butt war in the TMZ newsroom -- because the universe just isn't big enough for Coco AND Kim Kardashian's asses.

Octomom THE FIRST SELF-PLEASURE PICS

Here they are -- the pictures you've all been waiting for ... or were hoping would never surface ... Octomom ... completely naked and doing the unspeakable ... SURROUNDED BY BABY STUFF.

The pics are shockingly graphic -- so click at your own risk -- but we have to be honest ... for someone with fourteen kids, Octo looks damn good.

TMZ broke the story ... Nadya Suleman has partnered with porn studio Wicked Pictures to produce a self-pleasure video -- entitled "Octomom: Home Alone" -- set for online release on June 20.

It's still unclear how much Octo's expected to rake in with the mastur plan.

Jessica Simpson Post-Baby Body Got Back!

Just six weeks after giving birth, new Weight Watchers spokesperson Jessica Simpson gave a glimpse of her post-pregnancy body while leaving a gym in L.A. on Tuesday.

On May 1st, the 31-year-old had little baby girl Maxwell Drew, her first child with fiance Eric Johnson.

Taking one workout at a time, Jess should be back to her pre-baby weight in no time.

Fake Kim K. Twitpic The Naked Truth

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Kanye West's alleged twitpic of a naked Kim Karadashain turned out to be some OTHER hot chick with a nice butt who has sex on tape. Hmm ... time to research?

Check out TMZ on TV -- click here to see your local listings!

Miley Cyrus Newly Engaged Bikini Body

By rockin' a soaking wet bikini, teen sensation Miley Cyrus was flaunting a lot more than her brand new engagement ring in Miami on Tuesday.

With fiance Liam Hemsworth filming a new flick in New Orleans, the engaged 19-year-old enjoyed dipping her gorgeous curves in a South Beach hotel pool without him.

Even though there's no date set yet, Miley really knows how to stomach getting married so young.

Madonna When in Rome ... Flash Your Ass!

After flashing her nipple in Turkey the other day, Madonna continued to strip down on the latest stop of her body part peep show tour by showing off her mother-of-four butt in Italy on Tuesday.

While performing her hit song "Human Nature" again, the Queen of Pop unzipped her pants and exposed her lacy thong-clad 53-year-old taut backside to the crowd at Rome's Stadio Olimpico.

With controversial swastika references, Lady Gaga jabs and plenty of MILF nudity, Madge's MDNA tour has something for, er, everyone.

British Bikini Babe Yes, Please!

Amy Willerton is some sort of celebrity in Britain and the current title-holder of something called Miss London 2012, but all we know is that she looks amazing in a black bikini.

The 19-year-old showed off her rockin' body while on the beach in St. Maarten this weekend.

That's all.

Joey Lawrence vs. Jeff Timmons Who'd You Rather?

Buff, bronzed and hairless hunk Joey Lawrence made his Chippendales debut in Vegas this weekend ... a year after buff, bronzed and hairless former 98 Degrees member Jeff Timmons did his stint hosting the man stripper fest.

Question is ...

More Who'd you rather?

Erin Andrews Real or Fake? Great Boobies ... Debate

ESPN's Erin Andrews' tiny bikini exposed two HUGE questions: are her assets real or fake -- and does it matter? The answer to one of those is obvious.

Check out TMZ on TV -- click here to see your local listings!

Gina Gershon Goes Two Pieces on 50th Birthday!

"Showgirls" babe Gina Gershon celebrated turning 50 this weekend by showing off her rockin' body in a sexy bikini on a boat in Italy.

When you look this good, you can definitely have your cake and eat it too.

Erin Andrews' Boobs Too Good to Be True?

This photo of Erin Andrews in a bikini ignited another WAR in the TMZ newsroom ... after one staffer suggested parts of the ESPN reporter were simply too good to be true ... specifically, her massive boobs.

Erin took her gravity-defying twins out for a swim in Miami this weekend ... and while they're definitely spectacular, are they real??

We dug up another cleavage-baring pic from an event Erin attended in 2009 to compare ... and now we just gotta ask ...

Tiger Woods ... Is an Idiot.

Big Sean EVERYONE Knows About My Enormous Dong

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Big Sean would be SHOCKED if you didn't know about the fleshy firehose he's lugging around between his legs ... 'cause according to the rapper, "everybody" is aware of his super-large gift.

Sean -- whose member was unleashed to the world when nude photos leaked to the Internet last year -- appeared on KMEL 106 in San Francisco this morning when the DJ asked about the elephant (trunk) in the room.

Sean replied, "Everybody knows I got a big d**k, no homo, pause that."

The DJ then asked if rappers like Kanye and Wiz Khalifa measured up to him ... but Sean wasn't willing to dish.

For the record -- if you haven't seen the nude pics of Sean, you can still find them on the Internet ... just make sure to duck.

Dermot Mulroney Shirtless, Sweaty & Ripped!

"New Girl" guest star Dermot Mulroney showed off his amazing body of work during a topless, sweaty jog through Santa Monica this weekend.

The buff 48-year-old is in abs-olute great shape for any age.