Watch American Idol Season 9 Results Night Guest Performers

Carrie Underwood and Cristina Aguilera will be performing live in American Idol Season 9 Final Results. Carrie season 4 winner will be performing her single "Undo It". Cristina Aguilera will also be there as to announce the winner and she will promoting her single Bionic and she will perform one of her new songs " Not Myself Tonight"

Here is the single video of Cristina Not Myself Tonight and Carrie Undo It





(update) Lee DeWyze Is the American Idol Winner