Lena Dunham bares her booty and flashes a peace sign aboard a boat -- see the pics!
Vanessa Hudgens channels her inner Kim Kardashian in sexy black swimsuit -- see the sexy pic!
Justin Bieber spent 4th of July weekend partying with Kourtney Kardashian, dancing to Rihanna and wakeboarding in his underwear
Justin Bieber flaunts his washboard abs in shirtless photo
Britney Spears shows off her enviable six-pack abs (again!)
Kourtney Kardashian rocks leopard thong bikini on Sunday Funday
Cindy Crawford flaunts flawless beach body in teeny bikini
Jessica Simpson flaunts washboard abs in teeny bikini and Daisy Duke shorts
Melissa Joan Hart shows off 40 pound weight loss -- see her new swimsuit pic!
Britney Spears' bikini bod will make you want to hit the gym
Amy Schumer shows off her amazing beach bod in sexy black one-piece
Britney Spears dances in her underwear in sexy new clip
Kourtney Kardashian's washboard abs will make you green with envy
Gigi Hadid rocks barely-there two-piece in Sports Illustrated Swimsuit Issue
Hilary Duff shows off her smokin' bikini bod in Hawaii