Rihanna kept onlookers guessing in a variety of not two, not three, but at least SEVEN wardrobe changes in the duration of two shows.

Just two days after experimenting with a sheer, ruffled Jean Paul Gaultier gown and two stage costumes (one tribal bodysuit and one larger-than-life taffeta and tulle Christian Dior gown) at this year's Grammy Awards (bottom), the closet chameleon was at it again for the 2011 BRIT Awards (top), where she one-upped herself with four wardrobe changes, including a rosette-covered stage gown and a multicolored Christian Dior gown and matching pumps for the red carpet.

See more celeb styles from the 2011 Grammy Awards.

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