la reid justin bieber getty Justin Bieber mentors 'X Factor' contestants with L.A. ReidA few names have leaked out as to who Simon Cowell has nabbed to be the “celebrity mentors” for “The X Factor” Season 2 contestants. Nick Jonas is rumored to be helping judge Demi Lovato with the teens and now it appears as though Justin Bieber is lending a hand to L.A. Reid.

The paparazzi caught a few snaps of Bieber being greeted by Reid as he arrived to help mentor the over 25s group that Reid is in charge of this time around. Bieber also tweets, “long day but great day. @LA_Reid @ScooterBraun just like old times! thanks.”

L.A. Reid adds on Twitter, “Great day with my guys! @justinbieber @scooterbraun @TheXFactorUSA.”

We don’t yet know who the celebrity mentors are helping judge Britney Spears with the 17-24 year-olds or Cowell with the groups.  “The X Factor” premieres Wednesday, Sept. 12 at 8 p.m. ET/PT on FOX.

Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."