Carly Rose Sonenclare performance of Nina Simone’s hit “Feeling Good” blew everyone away on X Factor Season 2 audition Thursday night, September 13.

The judges were stunned by her performance!

Britney Spears said, “Miss thang, you are a little diva! You were unbelievable. You can see all of us are completely in love with you.”

L.A. Reid noted that Sonenclar “may be 13, but your soul is old,” and Demi Lovato said she was ready to buy the teen’s music “right now.”

And Simon Cowell can’t really imagine, “That’s not you singing,” he told Sonenclar. “Somebody is behind you singing that song.” He went on to add, “A star has just walked out on that stage. ”

Carly appeared on Broadway as the young Cosette in “Les Miserables” in 2006 and has sung the National Anthem for the Knicks and the Dodgers. But she’s largely unknown to the country and should be quite successful on “X Factor.”