Teen pop sensation Justin Bieber dominated the 2010 American Music Awards, beating out veteran performers to win artist of the year and three other trophies Sunday night.
"This is big," said the 16-year-old Canadian, whose first single hit the charts barely 18 months ago.
Fans voting online chose Bieber over Eminem, Ke$ha, Lady Gaga and Katy Perry for the night's top honor.
Bieber also
