Shania Twain, Christina Aguilera, and matchbox twenty are among the latest performers added to the lineup for the 30th annual American Music Awards. Set for Jan. 13 at the Shrine Auditorium in Los Ang

Shania Twain, Christina Aguilera, and matchbox twenty are among the latest performers added to the lineup for the 30th annual American Music Awards. Set for Jan. 13 at the Shrine Auditorium in Los Angeles, the event has also drafted Toby Keith & Willie Nelson, Kelly Osbourne, and Kenny Chesney to perform.

They join previously announced Tim McGraw and Elton John, who will team up to duet on John's "Tiny Dancer" to open the show, which will be broadcast live on ABC. Ozzy, Sharon, Kelly, and Jack Osbourne have been tapped to host the affair.

As previously reported, Ashanti leads the AMA list with nominations in five categories, followed closely by Eminem and Nelly, who each garnered four. In addition, Ashanti, Creed, the Dixie Chicks, Eminem, Enrique Iglesias, and Nelly are up for the AMA fans' choice award, voting for which is open at americanmusicawards.com and abc.com, through the day of the Jan. 13 show.