Kelly Clarkson didn't mince words reacting to a cellist's performance.

Kelly Clarkson is so f–king special. In a hilarious video from her Saturday (Aug. 2) show in Las Vegas, the star had to stop and start over while performing Radiohead’s “Creep” after dropping an F-bomb in response to an unexpected moment.

K elly Clarkson's Las Vegas residency hit a high note Saturday when a surprise moment during her cover of Radiohead's Creep prompted a reaction from the band's singer.