Kelly Clarkson’s 11-year-old daughter River Rose took the stage to perform “Heartbeat Song” alongside the American Idol winner during her July 18 concert at Las Vegas’ Caesars Palace.

Kelly Clarkson forgot that Ruben Studdard won "American Idol" in 2003, instead mentioning that Clay Aiken was the winner on her talk show.

Kelly Clarkson played it smooth when she made a blunder about American Idol Season 2 while talking to Clay Aiken.

Kelly Clarkson sheepishly admits that she forgot who the second winner of American Idol was back in the early 2000s after her initial win.

Kelly Clarkson thinks Carrie Underwood's upcoming role as a judge on American Idol just makes perfect sense. "I think that's brilliant," the pop star told E! News when asked for her reaction to ...

Kelly Clarkson thinks Carrie Underwood is a brilliant choice for the new American Idol judge, even though Clarkson wasn't interested in the job herself.

Kelly Clarkson thinks bringing Carrie Underwood back as judge was a “brilliant” move by American Idol producers. “What better person to have — somebody that’s won that show to come back ...

Kelly Clarkson exclusively told E! News that she thinks it’s “brilliant” her fellow “American Idol” winner Carrie Underwood is joining the competition show as a judge for the new season.

Original "Idol" winner Kelly Clarkson was asked if she'd have a full-circle moment and return to the show as Perry's replacement.

Kelly Clarkson is just a gal from Texas, who doesn't need to rock a full face of makeup all the time, which one 'American Idol' producer hated.

Singer Kelly Clarkson was feted on the Hollywood Walk of Fame on Monday, 20 years after she was crowned the first 'American Idol' winner.

Relive Kelly Clarkson's time on the first season of 'American Idol' from her audition to her triumphant win with these clips.