{blackbabes} X Factor: Mariah Carey Will Appear

It's official – Mariah Carey will appear on this fall's buzzy new talent competition, The X Factor, a source close to the show tells PEOPLE exclusively.

Carey won't be a judge, but rather a guest of a judge – in this case Simon Cowell, who hinted recently the diva was interested in joining the show.

"Mariah is definitely confirmed to be a part of X Factor," the source says. "She is confirmed to tape something with Simon Cowell at the judge's homes."