WATCH: Britney Spears and Rihanna ROCK ‘S&M’ at the 2011 Billboard Music Awards – VIDEO

Rihanna brought the sexy for the opening number of the 2011 Billboard Music Awards and then Britney Spears arrived on stage for the remix “S&M.” It was HOT!!

2011 Billboard Music Awards WINNERS – Complete List

2011 Billboard Music Awards Performers Announced – Complete List

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