(L-R) Luke Bryan, Lionel Richie, Carrie Underwood, and Ryan Seacrest attend the 'American Idol' in New York City (Image Source: Getty Images | Photo by Mike Coppola) Lionel Richie called Barise's ...

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