Oopsies!

Whitney Port definitely steamed up the swimming pool of her Miami Beach hotel over the weekend, nearly losing her barely-there bandeau bikini top while she was taking a dip with her beau – and RadarOnline.com has photos of her embarrassing bikini malfunction.

PHOTOS: Whitney Port Loses Her Bikini Top

For all the mileage we've gotten out of Kate Moss, there's little wear on those tires.

The English beauty steams it up in a series of shots for the Pirelli calendar, and we've got behind the scene images for you right here on RadarOnline.com.

PHOTOS: Kate Moss — Pretty For Pirelli

In the shots, taken by celebrity photographer Mario Sorrenti on the Mediterranean island of Corsica this past summer, the 37-year-old Moss shows off her sexy frame in a teeny tiny, flesh-toned bikini.

Reality television's most talked-about star is celebrating her 31st birthday on Friday, and you can be sure that the festivities are going to be over the top!

In honor of Kim Kardashian's special day, RadarOnline.com is bringing you photos of not only her style evolution over the years, but also her bikini body!

PHOTOS: Kim Kardashian's Bikini Body Through The Years

Not your typical career path, Kim Kardashian has gone through many transformations in 5 short years.  Rising to the public eye as Paris Hilton’s bff and continuing to get attention from her scandalous sex tape with Brandy’s brother Ray J, Kim finally achieved A-list status when Keeping Up with the Kardashians premiered to sensational ratings.

PHOTOS: Kim Kardashian's Style Evolution

Now married to NBA player Kris Humphries and taking over the business world with ventures ranging from perfume to clothing stores, this boobiful bombshell is determined to take over the world!

Kim is heading to Las vegas for her birthday festivities, and you can be sure it will be SOME party.

Happy birthday Kim Kardashian!

Jennifer Aniston and Angelina Jolie aren’t the only smokin’ hot bikini babes in Hollywood who have shared a lover!

It is the ultimate battle of the fittest when the sexiest stars battle it out over Hollywood’s hottest hunks -- only this time, it’s nothing personal -- it’s all about their bikini bodies! RadarOnline.com has all the sexiest stars who have shared lovers pitted against each other in a special bikini wars feature.

PHOTOS: Bikini Wars! Sexy Stars Who Have Shared Lovers

Everyone knows that Kate Hudson and Cameron Diaz love to play the game of love -- especially when it comes to baseball’s biggest slugger! Both the big screen bombshells have hit it off with New York Yankee Alex Rodriguez, though Cam’s stats with the pro baller are a tad bit better.

Sport’s Illustrated Swimsuit Edition cover girl Irina Shayk certainly knows how to steam-up a photo shoot!

The hot-bodied bikini and lingerie model flaunts her flawless figure and awe-inspiring assets in one of this season’s sexiest ad campaigns for contemporary brand Rampage – and RadarOnline.com has all the images!

PHOTOS: Irina Shayk Shows Off Her Hot Body In Rampage Campaign

Leo, Who?

Leonardo DiCaprio’s smoking hot ex-girlfriend Bar Refaeli continued her summer of love with new beau David Fisher in Porto Cervo, Italy on Monday – and RadarOnline.com has the photos.

The Israeli bikini and lingerie model and her new man were joined by a group of friends aboard a luxe yacht, where they spent the day cruising around the sun-drenched Italian Riviera town.

PHOTOS:  Bar Refaeli Shows Off Her New Beau & Bikini Body In Italy

AnnaLynne McCord recently made a splash on the set of her hit television show, hitting the beach in a trendy two-piece.

It was just a few years ago that the 90210 star’s super skinny body spawned media concern, so it was refreshing to see her looking better and healthier than ever. She isn’t the only hot Hollywood star to transform their beach bod.

RadarOnline.com has photos of some of the most recent and dramatic transformations – for better or for worse!

PHOTOS: Hollywood Stars Who Have Transformed Their Beach Bods

Jennifer Lopez has come a long way since her days as a Fly Girl on the television show In Living Color.  The smoking hot American Idol judge, Grammy Award winning singer and outstanding actress turns 42 on Sunday. It's hard to believe, considering she looks better than ever!

In honor of her special day, RadarOnline.com is bringing you photos of the newly single star, from the beginning of her life to the present day.

PHOTOS: Jennifer Lopez's Star Style Evolution

Jennifer established herself as an actress on the rise, when she scored the lead in the biopic Selena. Her portrayal as the murdered Latina pop star won over the critics, and she immediately became a household name. As her movie roles got bigger and bigger, so did Jennifer's aspirations.  In 1999, she released her debut album, On the 6, and thanks to such hits as If You Had My Love and Love Don't Cost a Thing, she became a pop sensation overnight, and J. Lo was born.

PHOTOS: Jennifer Gets Gorgeous In Gianfronco Ferre For Back-Up Plan Premiere

J.Lo, who had found love with hip-hop mogul Sean Combs in the late 1990s, after splitting with hubby Ojani Noa (a marriage, which would haunt her for years to come) flaunted her famous curves in sexy and revealing getup.  Her most famous look to date?  The dramatically low-cut, green Versace gown, which she wore to the 1999 Grammy Awards. The dress spawned a media sensation, and still hasn't been forgotten over a decade later.

After splitting with Combs, and another failed marriage to backup dancer Cris Judd, J. Lo turned into Jenny From The Block, falling in love with Hollywood heartthrob Ben Affleck. The two became Hollywood's golden couple, and Jen transformed into a glam goddess on the red carpet, wearing elaborate gowns and fur, while showing off her enormous $1.2 million dollar pink diamond engagement ring from Ben.

PHOTOS: Jennifer's Bikini Body

After ending the engagement, Jennifer ended up back in the arms of her former flame, Marc Anthony, marrying him in 2004. The couple welcomed twins Max and Emme in 2008.

Since her last birthday, Jen's life has changed dramatically.  After landing herself a spot on the judges panel of American Idol, the luscious Latina shocked the world when she and Marc announced their marriage was over.

What was Jen's best look every?  Find out by clicking here.

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