“American Idol” judge Carrie Underwood has surprised viewers with a callback to her time on the show in 2005.

There were enough hints dropped by American Idol regarding this nostalgic performance, but still, it took fans by surprise. Carrie Underwood, who first appeared on the stage 20 years ago as a contestant,

It’s been 20 years since Carrie Underwood won Season 4 of American Idol in 2005, but she can still fit into the same exact dress that she wore to perform during the finale back then. On the Monday, April 28,