Bieber, Swift, Minaj and Carly Rae Jepsen win AMAs

Swift won more awards, Bieber thanked his haters, Ke$ha and Usher sang during Sunday's American Music Awards.

Romeo Testa arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by John Shearer/Invision/AP)

Romeo Testa arrives at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by John Shearer/Invision/AP)

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