American Idol S11 E40 Grand Finale

"Dream big."

The winning singer is revealed in the conclusion of the two-part Season 11 finale. Guest performers include Rihanna, Aerosmith, Neil Diamond and Chaka Khan, John Fogerty, Jennifer Holliday, Fantasia, Jordin Sparks and Reba McEntire. Also: a reunion of the Top 12 contestants.