First Look: Rihanna Guest Judges on 'X Factor'

Rihanna will share some of the secrets behind her success when she guest judges on Simon Cowell’s “X Factor” tonight. Entertainment Weekly has the first photos of the pop superstar mentoring the boys team with her former label boss L.A. Reid at his home. Pharrell is also rumored to make an appearance on the two-hour episode, which airs tonight at 8 p.m. on Fox.