Demi Lovato's Back For More 'X Factor'

Britney's out, L.A.'s out, but Demi's in!

Fox announced today that Demi Lovato will re-join Simon Cowell at The X Factor mentor table for the show's upcoming third season! "I couldn't be happier that Demi wants to come back this year," Cowell said in a statement. "She's a superstar in her own right and was a fantastic mentor last year. Even though she can be really, really annoying -- I truly enjoyed working with her and so did the artists. I'm especially pleased she's back, even during her world tour!"

VIDEO - Listen to Demi's New Single, Heart Attack

"I am so excited to return as a judge and mentor on The X Factor," Demi added. "Last season was an unbelievable experience and I really enjoyed developing personal relationships with the contestants and the panel. I look forward to taking my previous experience and applying it to make this season even better!"

The X Factor season three premieres this fall on Fox.