Billboard Music Award Winners 2011

Check out which stars won top honors at the Billboard Music Awards!

Recording artist Rihanna arrives at the 2011 Billboard Music Awards at the MGM Grand Garden Arena May 22, 2011 in Las Vegas, Nevada.
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7. Rihanna

Rihanna took home the Radio Artist of the Year award just a little while after she and Britney Spears tore it up on stage while singing their "S&M" remix. We highly doubt anyone was paying attention to the acceptance speech -- their racy performance stole the show!

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