‘X Factor’ Snags Rihanna as Guest Mentor

Other surprise, guest mentors to appear tonight

Rihanna joins L.A. Reid to mentor the male contestants on "X Factor" tonight, Thursday and next Tuesday, Fox announced.

The news confirms a report by TMZ last month that said the "Umbrella" singer would help mentor contestants.

Also read: Fox Bumps 'New Girl,' Reshuffles 'X Factor' for Baseball

This week, the 32 acts that survived the show's "Boot Camp" will visit a judge's home or another location of his or her choice, where the judge will mentor them toward trying to earn a place on the live shows.

Rihanna will help Reid, and "additional superstar guest mentors" will join the other judges, Fox said. The other mentors will be revealed tonight.