Justin Bieber 2010 American Music Awards Performance Video, Wins Artist of the Year !

Justin Bieber dominated the 2010 American Music Awards held at the Nokia Theatre L.A. Live on Sunday (November 21) in Los Angeles.

"I can't stop smiling," says Bieber.

The teen star won for pop/rock male, breakthrough artist, album of the year for My World 2.0 and artist of the year.

Usher picked up two awards , Eminem also was a double winner for male rap/hip-hop artist and for his album, Recovery reports PEOPLE.

Other winners included Lady Gaga for pop/rock female, The Black Eyed Peas for pop/rock group, Brad Paisley for male country artist, Taylor Swift for female country artist, Lady Antebellum for country group and Carrie Underwood for country album of the year.