Carrie Underwood gave fans a blast from the past by performing "Alone" on "American Idol," two decades after doing so on the ...

Carrie Underwood is literally on a roll these days! The 'American Idol' Season 4 winner seized the golden opportunity to replace Katy Perry as the judge of the show, bringing her journey full circle.

Fans first saw Underwood wear the halter-top dress during the Season 4 finale in May 2005. She rocked the look when Ryan Seacrest called out her name as the winner. Bo Bice was the runner-up.

Fantasia Barrino returned home to the stage that made her famous twenty years after she won American Idol. She wasn't only there to reflect during the April 28 "Iconic Idol Moments" episode; she also ...