The first ever American Idol Kelly Clarkson took to the UK X Factor stage to perform "Mr. Know It All" her new single off her new CD.
It's no secret we really like this new single from Kelly....and that we think that the American version of X Factor is much better than the UK version. If we didn't think that, there would be wall to wall coverage on the UK version instead of the US version.
Regardless, here is Kelly belting out her new song.-DocFB
Diagnosis: Love the breakdown part at 2:16 (Phil Collins-esque)