The unnamed insider added that the "Because of You" singer is "completely fine," and noted that it is "not a cause for alarm," claiming that Clarkson would be back on air on March 13—however, that was not the case. Instead, Molly Sims appeared as a guest host, telling viewers that she would also be hosting the show on March 14.

Since Feb. 28, Kelly Clarkson has missed several episodes of the show. She didn’t appear in the March 3 taping of the show and was replaced by guest host Simu Liu who revealed that he learned about the gig “five minutes” before stepping out on stage, where he was supposed to attend as a guest.

Kelly Clarkson has been mysteriously absent from 'The Kelly Clarkson Show' for a week — and no one seems to know why.