Geist, Wanda Sykes, Brooke Shields, Roy Wood Jr. and more celebrities have been filling in for the singer on her talk show for nearly a week.

Kelly Clarkson is out from her talk show and some surprising guest hosts are stepping in to help while the "Since U Been Gone" singer is gone.

Fans warmed up to Geist as a guest host very quickly, with one user on Instagram calling him a "natural" at the gig. "Welcome to The Kelly Clarkson Show! I'm very much not Kelly C ...