Make homemade invitations or you can order American Idol invitations online. For homemade, just cut circles out of black construction paper and make them look like records! You can cut a smaller white circle in the middle and write your invitation there! When the rockstars RSVP, have them submit their favorite song so you can have it queued up and ready for their performance at the party. If your idol contestant is not quite ready for a solo, suggest a duet or group performance.