Bieber rocks downtown L.A. as he preps for VMAs

Teen sensation Justin Bieber lost his 3 nominations to Michael Buble and Drake at Canada's music awards.

September 11, 2010 7:38:35 AM PDT
Visitors to Staples Center and the adjacent L.A. Live plaza were treated to an unannounced free concert when Justin Bieber took to an outdoor stage to rehearse his performance for Sunday's MTV Video Music Awards.