Avril Lavigne, Alanis Morissette, R. Kelly on 'The X Factor'

Slideshow posted in Photos | Monday, November 21, 2011

1 of 26: Josh Krajcik (L) and Alanis Morissette perform her 1998 song 'Uninvited' on 'The X Factor' on Dec. 21, 2011 on FOX. ( Photo / Ray Mickshaw / FOX)

Get more: 'The X Factor', TV