Shake it, girl!

shows off her booty in tiny shorts in the funky music video for her new single, "Rude Boy," off her Rated R album.

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The singer, 21, also dances around in a bra top, poses on a Zebra and plays the drums during the '80s pop art-inspired clip.

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The video's colors pay homage to the Caribbean. Rihanna is a native of Barbados.

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