Carrie Underwood's choice to perform at the inauguration might make for a tense 'American Idol' season with fellow judge Lionel Richie. Here's what a source shared.

Carrie Underwood, the American Idol sensation, who has landed herself a judge's spot for the new season, has soared to stardom since her win on the iconic talent show, becoming one of the best-selling music artists ever and snagging three Grammy Awards.

Returning judges Luke Bryan and Lionel Richie are joined by country music star Carrie Underwood for this season of American Idol, which airs Sunday, March 9 on ABC at 8/7c.