Miley Cyrus has already pre-taped her performance on American Idol, but now we have a date for her appearance – look for Cyrus to sing on the April 15 Idol.

Miley Cyrus posted on her web site the details of her appearance, telling fans to check her out on April 15, when she sings “The Climb” from her new Hannah Montana movie.

Who’s Miley hoping will win American Idol? After taping her performance, she tweeted: “Just did ‘Idol’ and met Allison! Vote for Allison, she rocks!!!!”