2012 saw its fair share of celebrities showing off their sexy curves in bikinis at the beach (and one-piece suits as well), but which stars were the sexiest of all?

Some were snapped by the paps, while others discovered the magic of Instagram and shared photos nearly every time they went, minimally clothed for some sun, sand & surf.

Stars like Kim Kardashian and Rihanna seemed to post their sexy shots the most, while supermodel Bar Refaeli shared lots of photos with her fans.

Britney Spears got her bod back to its rockin' old form; while Stephanie Seymour, 44, and Daisy Fuentes, 46, prov...

They've delighted us on stage, on screen and on the red carpet - they're the hottest women of 2012!

One of them, Rihanna, keeps making headlines for her mysterious relationship with Chris Brown. She sucks us in with her number-one songs and controversial Twitter photos.

British royal Kate Middleton has always turned heads, but now that she's pregnant she's captured the hearts of even more fans all over the world (and the leaked topless photos earlier this year didn't hurt).

At 43 Jennifer Lopez is one of the oldest women on our list, but she still knows how to dominate the stage in skint...

Sexy Ultimate Fighting Championship (UFC) Octagon girl Arianny Celeste gets our engines started in the December issue of Maxim magazine, showing off her sexy curves in a black bikini with a sweet red ride on the cover.

The 27-year-old model, full name Arianny Celeste-Penelope Lopez Marquez, dishes on how letting fight fans know what round is about to begin has changed her life, and she also shares the perks of her job.

"[UFC has] blown up! First I thought MMA (mixed martial arts) was kinda of scary, but seeing what the fighters go through, I have total respect for what they do."

Arianny,...

For many people Labor Day weekend marks the end of summer, with the kids all back to school and most of the country dreading the coming of the winter months.

Labor Day weekend is also a time to celebrate with friends and family, by having one last hurrah before playtime is over. It's also one of the last times to hit the beach and check out those hot summer bikini bods.

To mark the end of summer, here are our favorite sexy bikini shots some of our favorite celebs have posted this summer.

We would normally be saddened by this, but deep down we know that plenty of celebs live in warmer loc...

Last night, fans gathered at MGM Grand in buzzing anticipation of [Saturday night's] Manny Pacquiao vs. Shane Mosley fight. Partygoers made their way to Studio 54 where brunette bombshell Arianny Celeste hosted a pre-fight party as part of the Knockout Kings' Pound4Pound Weekend.

Jaws dropped and flashes snapped as Celeste arrived looking sexy in a body-hugging one-shoulder silver mini-dress. Celeste completed her look with black glittery stilettos, fierce bangles and perfectly coiffed locks. The "Ring Girl of the Year 2010" made hearts melt as she coyly smiled and posed for photographers ...