Mariah Carey to mentor Simon Cowell's contestants on X Factor

Simon Cowell is finally bringing Mariah Carey to The X Factor! She was one of his first choices to be a judge, but she got pregnant with twins. Moroccan and Monroe were born last May, so Mariah is now available.

Simon is tapping her to be the mentor for his contestants! Woohoo! Go Team Simon!

From Deadline:

Hollywood has been wondering exactly when Simon Cowell's The X Factor debuting on Fox this fall would start adding some celebrity glitz. Now I've learned it's coming soon. The X Factor judges will have one superstar work in each panelists' respective homes to whip their contestants into shape for the show. And Simon Cowell is in final negotiations to have Mariah Carey as his personal pick to mentor his contestants from his house. "He's still finalizing her deal," an insider tells me. The X Factor is pulling out all the stops to draw in other superstars as mentors.