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Kelly Clarkson: 'Mr. Know It All' on 'The Tonight Show'!

Kelly Clarkson: 'Mr. Know It All' on 'The Tonight Show'!

Kelly Clarkson belts her heart out on The Tonight Show with Jay Leno, filmed on Tuesday (September 20) in Burbank, Calif.

The 29-year-old singer sang her newest hit single “Mr. Know It All” in a sequined black off-the-shoulder dress in front of Jay Leno‘s live studio audience!

Be sure to look out for the music video of “Mr. Know It All,” set to hit the web on September 26.

Kelly‘s album Stronger will be released on October 24. Check out the album cover art in case you missed it!

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