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The 10 Best Dressed Celebrities of 2012

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6. Rihanna

Fashion's bad girl, Rihanna, keeps us on our toes when it comes to style. While she may prefer oversize sweaters and blinged-out fanny packs on the street, she loves to get dolled up for the red carpet. Our favorite look? That supremely sexy Giorgio Armani gown with plunge of all plunging necklines.