Kelly Clarkson appeared on a season 5 episode of this fan-favorite drama — and now she's apologizing to the cast and crew.

Kelly Clarkson is no stranger to fame and famous people. She is a massive pop star who deals with fans consistently, plus she’s a talk show host, so she speaks with major A-list celebrities on a daily basis.

Singer Kelly Clarkson has issued a public apology after making a dramatic confession about her time on the set of The Rookie, where she starred as herself