Pop acts Justin Bieber, Ke$ha and Katy Perry have all been added to the already star-studded line-up of performers for this year’s American Music Awards. Other performers previously announced to perform at the show next month include Christina Aguilera, Usher, Bon Jovi, Pink and Rihanna (who is rumored to open).

“As a small-town kid from Canada, I never imagined that I would be nominated for AMAs, let alone be performing on the show,” Justin Bieber told AP.

Bieber, along with Eminem, B.o.B. and the some of the performers mentioned, including Katy Perry, Ke$ha and Usher, are all nominated for awards, with Eminem leading the pack with 5 nods.

The 2010 American Music Awards will air live on ABC from the Nokia Theater in Los Angeles on November 21st