Hot Bodies

"True Blood" hunk Ryan Kwanten showed off every inch of his washboard abs while taking a dip Tuesday on the beach in Malibu.

His show may have seen better days, but Kwanten is still in his prime.

Jared Leto took a leap of faith in Ibiza while cliff diving with friends.

And the gold medal for "Camera Whoring with Your Ass Out" goes to ... Brittny Gastineau -- and this video proves it beyond a shadow of a doubt.

Kim Kardashian's pal appeared to be several drinks in when she poured herself all over a bar at the Fontainebleau Hotel in Miami this weekend -- and slowly undressed while blatantly mugging for paparazzi.

The most awesome part of this video is not Brittny's ass ... but the fact everyone around her is totally ignoring her.

You know how this ends, right? With Brittny passed out, looking like she's auditioning for "Weekend at Bernie's."

Justin Bieber is on an absolute tear in Ibiza, and his latest conquest might be his best -- the Playboy Playmate he held a late night make out session with on a yacht.

Biebs was photographed hooking up with Miss July 2013, Alyssa Arce on Thursday night. Our sources say she and Justin met on Wednesday ... and ended up hanging on the same yacht. Funny how that happens in Ibiza.

22-year-old Alyssa is signed with Wilhelmina LA, and we're told she hit it off with Justin almost immediately -- but it's nothing serious just yet.

As one source put it ... they're just "having fun."

Amen.

Zac Efron and Michelle Rodriguez got so hot and heavy while making out in a packed Ibiza nightclub that some of us are starting to believe this romance is real.

But real good or real bad (for post-rehab Zac) -- depends on who ya ask.

Got a ton of celebs looking for someplace to party? Yacht a problem! Just do what One Direction's Liam Payne, Chris Brown, Zac Efron, Jared Leto and Michelle Rodriguez are doing -- and get on a boat!

Sexy high seas adventures await -- but only if you're smoking hot or filthy rich, of course.

David Beckham showed off his parenting skills by taking his kids to the beach, but he did it topless -- so all anyone cared about was his awesome chest.

The soccer legend piled his kids into the car after hanging out at an L.A. Beach Thursday ... while flaunting his perfect 39-year-old physique.

Woah, daddy.

Heidi Klum nearly posted one of the best photos in the history of Instagram ... if only designer Zac Posen had kept his damn hand to himself.

Klum, wearing nothing but a pair of tiny panties, posted the photo with the caption: "@zac_posen ....I need something to wear for tonight's @projectrunway @lifetimetv."

While her ex and her alleged fling duke it out in Ibiza, Selena Gomez rocked the shortest of shorts Thursday while heading to a meeting in L.A.

As TMZ first reported, while Justin Bieber and Orlando Bloom fought over Miranda Kerr ... there is some tangential Selena involvement.

Our sources say Gomez -- who was once famously photographed with Bloom -- claims she never hooked up with the "Lord of the Rings" star.

Selena Gomez ... hate to see you go, but love to watch you leave.

Justin Bieber clearly has a thing for Australian women ... a day after brawling with Orlando Bloom over Miranda Kerr, Biebs was spotted on a yacht in Ibiza with another Aussie babe, Shanina Shaik.

Shaik -- who Instagrammed a few shots from the boat -- was born and raised in Melbourne and has done modeling work for the likes of Vivienne Westwood and Chanel. She dated Tyson Beckford for years until their breakup in 2013.

There's no evidence Justin was involved with their split, so he should be safe ... which is good. Tyson is waaaaaaaay bigger than Orlando.

Whether it be from the side or from the front, who doesn't love boobies?

Lindsay Lohan served up her side-boobage while on the beach in Ibiza -- while Chrissy Teigen and Lady Gaga opted for a cleavage-bearing tops while out and about (separately) in New York City.

Gravity ... it's undefeated.

Gisele Bundchen frolicked around on the beach Tuesday in Costa Rica ... crawling around in the ocean with her adorable dog Lua.

Chris Brown continues to look noticeably heavier since getting out of jail ... bravely partying without a shirt on while hanging out Wednesday afternoon in glorious St. Tropez.

CB is partying in France while one of his new neighbors in the San Fernando Valley tells TMZ he has no qualms about shooting the R&B singer if he trespasses onto his property.

Based on these photos, it doesn't seem Chris moves with a lot quickness these days ... so he's best to heed the warning.

If Orlando Bloom was worried about Miranda Kerr -- hours before fighting Justin Bieber -- he wasn't showing it because he had his hands full with multiple hot chicks.

Bloom was cruising around the island of Ibiza Tuesday on a speedboat, pumping his fists in the air, dancing with beautiful women ... and looking like he's shouting, "Turn Down for What!" Ultimate bachelor's life.

Looking at these pics, it was VERY GOOD to be Orlando yesterday. Last night? Not so much.

Shoulda stayed on the boat, Orlando.

Paris Hilton and boyfriend River Viiperi are on the outs, cause she was sucking face with some guy on the beach this weekend ... someone other than River.

Hilton and her new male model friend Josh Upshaw were in Malibu Sunday when they got deep into a make out sesh ... right in the open. According to our sources, Paris and River ended their relationship amicably recently.

Neither has spoken about the break-up, but they haven't been seen together for several months now.

The River no longer runs through it.