Justin Bieber
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American Music Awards dominated by Justin Bieber

Teen star Justin Bieber dominated the American Music Awards winning four prizes from four nominations, including artist of the year.

Bieber, 16, who beat Eminem, Usher, Katy Perry and Lady Gaga to artist of the year, also won best pop album, best pop male, and breakthrough artist.

Other winners included Usher, Lady Antebellum, Muse, Black Eyed Peas, Taylor Swift and Rihanna.

Awards footage courtesy of Dick Clark Productions.