It is only a few hours until this year’s American Idol finale gets underway and a last minute announcement has revealed that former Idol winners Kelly Clarkson & Fantasia Barrino will be duetting on the results show.

Before we find out whether Lee DeWyze or Crystal Bowersox will take the crown, we’ll be treated to some amazing celebrity performances and along with Kelly and Fantasia, sources also suggest that Christina Aguilera will be singing on the show.

Kelly and Fantasia’s performance will be dedicated to outgoing judge Simon Cowell. Clarkson’s Facebook page announces, “Don’t miss Kelly performing tonight on American Idol! She and fellow winner Fantasia will be performing ‘Together We Are One’ as a farewell performance to Simon Cowell.”

Cowell has previously admitted that Barrino’s Season 3 performance of “Summertime” is his favorite ever “Idol” moment.