american music awards

Tonight Nov. 20, 2011 @8/7c on ABC.

Performance by Christina Aguilera, Justin Bieber, Mary J. Blige, Kelly Clarkson, Katy Perry, Pitbull,  and Maroon 5, Jennifer Loperz, Marc Anthony, LiL Jon,  Drake, Nicki Minaj, Enrique Englesias with Ludacris, Chris Brown, The Band Perry, David Guetta, OneRepublic, and will.i.am.