Kelly Clarkson recently stopped by The Tonight Show and had one EPIC 'Beat Battle' with Jimmy Fallon! If you've never seen this segment before, the band gives Jimmy and the featured guest a beat and they must sing songs that match up non-stop. The pair covered Shawn Mendes + Camila Cabello, Billie Eilish, David Bowie + Mick Jagger, Walk The Moon, Ariana Grande and more. Check out the awesome clip below...