Underwood, who's now serving as a judge on the show, won the show in 2005 Carrie Underwood is throwing it back to 2005. On Sunday, April 6, the "Before He Cheats" singer shared a carousel of never-before-seen pictures from her run on American Idol in 2005.

American Idol's Carrie Underwood revealed some never-before-seen photos amid signs that the show could be retooled and she may not be the real issue.

Country singer Carrie Underwood took on a new role when she replaced Katy Perry as judge for the 23rd season of American Idol. It was the perfect fit as Carrie has plenty of experience with reality TV singing competition series — she won it once before.