Kelly Clarkson just admitted that a celebrity who went on to become a coach on 'The Voice' was once very 'mean' to her.

Kelly Clarkson didn't name anyone or specify gender, but a journalist claimed it was an A-lister who was harsh towards her ...

Kelly Clarkson says some of the people who were mean about her ‘American Idol’ win became coaches on ‘The Voice.’ ...

Once criticized for winning 'American Idol', Kelly Clarkson revealed those same artists went on to become coaches on 'The Voice.' ...

Kelly Clarkson is detailing what it was like to be the first winner of American Idol — and how some critics of the series eventually warmed up to the talent show genre later on. "I had no one.

Kelly Clarkson is revealing some secrets about her time on “American Idol” and “The Voice.” On March 27, the talk show host appeared as a guest on the “Not Gonna Lie with Kylie Kelce ...