Kelly Clarkson Performs 'Mr. Know It All' on 'Tonight Show' (VIDEO)
Stunning in a black sequin, off-the-shoulder dress, she once again delivered her signature, heart-wrenching vocals into living rooms of America. As we all know, the American Idol starlet needs no lip-syncing!
Lyrics to this song include “you don’t know a thing about me,” so could this song be directed to a former beau? Sound off in the comments!
This is the first on-air performance of the new single from her album, Stronger, which will be released in stores and online retailers October 24.