Stars In Heat

A newly engaged Steven Tyler exercised his right to bare chest yesterday in Maui -- celebrating the New Year with a topless Speedo-clad snorkeling excursion ... not far from his new fiancee.

Steven and his lady Erin Brady have been spending a lot of time in Maui recently -- and as TMZ first reported ... even hired a local spiritual leader to come bless their new Hawaiian home.

More attractive people in paradise ... this time it's 19-year-old Miley Cyrus kickin' it in Hawaii ... in a teeny, tiny red bikini.

Being cold in December is not for the rich and famous.

Everything was bikini as usual when Rihanna hit the beach in her native Barbados yesterday ... until she took a dip in the ocean.

Rihanna's orange bikini top turned transparent in water ... but the singer didn't seem to mind, splashing around without a care in the world.

Former *NSYNC boy bander Lance Bass showed off his trimmed pecs and abs by going shirtless while on the beach in Miami on Thursday.

There's nothing like soaking up the sun with a six-pack.

It's been years since Brooke Burns was on "Baywatch," but you'd never know it based on her smokin' hot bikini body in Maui on Tuesday.

The 33-year-old "You Deserve It" game show host recently got engaged to "Warrior" director Gavin O'Connor.

For Brooke, life really is a beach.

Ben Stiller proved he's still got those "Zoolander" looks and moves by showing off his 46-year-old ripped, buff shirtless bod in Hawaii on Tuesday.

Blue Steel isn't the only thing that never gets old.

Multilingual Swiss model Nena Ristic exercised her gift of the gab in Miami on Christmas Eve -- chatting up several eager men on the beach ... including AC Milan soccer star Kevin-Prince Boateng (left).

Nena speaks five languages -- English, French, German, Serbian, and Italian ... not counting Assamese.

Sofia Vergara may have been on vacation this weekend in Mexico ... but her bikini top was stuck working overtime.

Your move, Katy Perry.

Katy Perry spent her Xmas Day frolicking around in the ocean off the beaches of Hawaii with some friends ... but without hubby Russell Brand.

Jon Bon Jovi, not dead, enjoyed his Christmas Day on the beach in St. Barts with his family.

Most of the country has a half-day today ... but not us -- we're working!!!! So, to ease the pain, we've put together a giant gallery of beautiful people running around in practically nothing.

There's also a photo of John Stamos hiding somewhere in the gallery.

With her son Peter nowhere in sight, supermodel Stephanie Seymour showed off her lovely girls in a sexy tan bikini in St. Barts on Tuesday.

The 43-year-old is hanging on by a string ... and what a gorgeous string it is.

Croatian soccer star Darijo Srna soaked his smooth, ripped muscles in baby blue man-panties while on the beach in Barbados on Monday.

The 29-year-old has a lot of support.

"Step Up 3D" star Sharni Vinson showed off her alarmingly slender bikini body on the beach in Sydney this weekend.

The 28-year-old -- who is currently dating "Twilight" muscleman Kellan Lutz -- could really use a cheeseburger about now.

So, we gotta ask ...

"Miss Venezuela 2002" Aida Yespica was desperately in need of some support earlier today -- hitting Miami Beach in a polka dot bikini so small ... it defied the laws of physics.

Here it is ... PROOF Lindsay Lohan can still act ... because the actress hit the beach like she didn't have a care in the world Sunday ... hours after someone jacked $10k out of her purse.

With her Playboy spread officially released online, Lohan showed off her physique in a tiny bikini ... that couldn't quite tame her breasts.

TMZ broke the story ... Lohan freaked out Saturday night when her purse went missing at a house party ... a purse which contained her ID, passport and $10k in cash.