Guess Me From Behind: Ms. Thong Bikini!

When in...Brazil?
This celeb seems to have been inspired by the locals to strip down to a sexy thong bikini for a day at the beach.
Can you guess which pop star was brave enough to let her butt cheeks hang out of this skimpy two-piece?
It's Fergie!
The Black Eyed Peas singer is currently on tour but took a day off to enjoy some next-to-naked time at the beach with hubby Josh Duhamel.
Bet he's enjoying the view.
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