Carrie Underwood, 42, went back to her “American Idol” roots for the season’s “iconic Idol moments” special on Monday night.

Addis’ own John Foster continued to shine on American Idol this week, taking one of the coveted spots in this season’s Top 10.

Billy Idol and Avril Lavigne performed their collaborative single "77" on Monday night (April 28th) on Jimmy Kimmel Live! Watch the performance.