Her risque performance with Britney Spears was the talk of the Billboard music awards.
And the night was a resounding success for Rihanna – who along with Taylor Swift – was one of the key winners.
The Barbados-born singer's wins included gongs for radio artist of the year and top female artist.
Taylor won the award for top album and she was also named the top country artist.
"The impact of an album is all determined by the fans," she told the audience when she picked up her first. "You've just given me another reason to be completely in love with you."
Other winners included Justin Bieber, U2 and the Black Eyed Peas.
Beyonce Knowles received a special Millennium Award for her career achievements.
She was feted in a video by an array of legends including Stevie Wonder, Barbara Streisand, Bono, Lady Gaga and US First Lady Michelle Obama.
"This is a moment I have to soak in because it's gonna be - and it is - one of the best moments of my life," Beyonce said after receiving the award from her mother, Tina Knowles.
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