Jennifer Lopez to perform w/ Will.i.am at AMAs

LOS ANGELES

The announcement on Tuesday rounds out the lineup of performances previously announced, including Christina Aguilera, Marc Anthony, Justin Bieber, Mary J. Blige, Chris Brown, Kelly Clarkson, David Guetta, Nicki Minaj, Katy Perry, Pitbull and Maroon 5.

It was also announced that this year, the American Music Awards will feature five collaborations: Pitbull with Marc Anthony and Lil Jon, Gym Class Heroes with Adam Levine, will.i.am with Jennifer Lopez, Nicki Minaj with David Guetta, and Maroon 5 with Christina Aguilera.

Winners will be determined by fans voting online at amavote.com or ama.abc.com.

The show will be broadcast from the Nokia Theatre in downtown Los Angeles on Sunday at 8 p.m. PT on ABC.

ABC will air a live pre-show "Countdown to the American Music Awards" at 7 p.m. PT.

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