LeAnn Rimes: Carly Rose Sonenclar's Duet Partner in 'X Factor' Finale!

LeAnn Rimes is all smiles while chatting with Jay Leno during her appearance on The Tonight Show with Jay Leno on Tuesday (December 18) in Burbank, Calif.

After her chat, the 30-year-old singer wowed the audience with a performance on the show.

PHOTOS: Check out the latest pics of LeAnn Rimes

After the show, LeAnn tweeted, “Leno was fantastic and I was and am SO sick. Thank you GOD for pulling me through and talking w/ jay was was always fun!!!”

It was recently announced that LeAnn will sing a duet with Carly Rose Sonenclar on the season finale of X Factor.

“LeAnn Rimes is singing with me and I’m very excited about that,” Carly shared. “I think she is amazing and her voice is really, really special. I’m psyched.”