Producer Larry Klein unveiled the latest group of AMA entertainers on Monday. They join previously announced performers Katy Perry and Pitbull.
Fans can vote online for the winners of the AMAs, which will be presented Nov. 20 at the Nokia Theatre in Los Angeles.
Klein says the host-free show will feature unusual pairings such as Aguilera performing "Moves Like Jagger" with Maroon 5.
The AMAs will air live on ABC.