Britney Spears, Mick Jagger and Usher are the latest performers who have been added to the 29th annual American Music Awards roster, joining previously announced artists Kid Rock, Lenny Kravitz and Shaggy.

P. Diddy, who'll co-host the show with former MTV personality Jenny McCarthy, will also perform, according to a spokesperson for Dick Clark Productions, Inc.

Spears will render "I'm Not a Girl, Not Yet a Woman" from her third album, Britney, while Usher is slated to deliver "U Got It Bad" from his latest LP, 8701. The Rolling Stones frontman hasn't decided exactly what will comprise his stage show.

Cher, gospel artist Yolanda Adams and country stars Toby Keith and Brooks & Dunn round out the list of performers (see [article id="1451353"]"Ludacris, O-Town To Present At AMAs, Lenny Kravitz to Perform"[/article]).

Additionally, 'NSYNC, Pink, Faith Evans, the Calling, Lit, Mandy Moore, Uncle Kracker and Gene Simmons and Paul Stanley of Kiss have signed on to present winners with the awards, as have such non-musical guests as Christina Applegate, Melissa Joan Hart, Rose McGowan and Tiffani Thiessen, among others.

Previously announced presenters include India.Arie, Alicia Keys, and Master P and Lil' Romeo.

The 29th annual American Music Awards will take place January 9 at Los Angeles' Shrine Auditorium and will be broadcast live on ABC, except on the West Coast, where it will be tape-delayed.