Carrie Underwood and Kelly Clarkson to hit the stage during 'American Idol' grand finale

Get ready for a double dose of American Idol’s two most successful winners, Kelly Clarkson and Carrie Underwood, hitting the stage during the two-part Grand Finale starting next week.

Their performances will take place on Thursday, April 7, which is the third night of the three-night finale. It’s not just Clarkson and Underwood who will perform, other winners will also hit the stage to sing before host Ryan Seacrest announces the last-ever Idol winner.

Fantasia, Ruben Studdard, Taylor Hicks, Jordin Sparks, David Cook, Kris Allen, Lee DeWyze, Scotty McCreery, Chris Daughtry, Clay Aiken, Constantine Maroulis, Katharine McPhee, Kellie Pickler and many more will also perform on April 7.

The finale will kick off on Tuesday, April 5 with a 90-minute retrospective called AMERICAN IDOL: AMERICAN DREAM, and from there the two-part finale will commence the following night.

Fox announced Idol was ending after 15 seasons back in May 2015.

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