GIRLS GONE WILD: 10 Crazy Sexy Cool Celeb Chicks Wildin' Out (PHOTOS)

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Rihanna is a classic case of a good girl gone bad...very, very, bad.

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They say you can't turn a bad girl good, but once a good girl's gone bad she's gone forever.

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Hot celebs like Rihanna and Katy Perry were once sweet wholesome music-loving singers, but after being in Hollywood for almost a decade, these two sex kittens have turned into certified bad gals. 

Some celebs are new to the bad girl gig, but other celebrities like Paris Hilton are veterans in the game when it comes to bad behavior. 

Paris Hilton has been arrested more times than we'd like count, starred in a few sex tapes, and let's not forget, Paris has flashed her va-jay-jay on a few occasions. 

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GlobalGrind rounded up 10 of the craziest, sexiest and the coolest celebrities who let it all hang out (literally), and don't be surprised if you see a politician in the mix!

Check them all out in the gallery above.