Jennifer Lopez, Gwen Stefani to Appear on Idol
02/23/2007 AT 08:40 AM EST
On Thursday's elimination show, the full lineup was announced: In addition to Lopez and Stefani, Jon Bon Jovi, Martina McBride, Diana Ross, Barry Gibb and '60s stars Lulu and Peter Noone from Herman's Hermits (for a British Invasion night) will all guest on the FOX hit.
Access Hollywood had previously reported that Lopez was expected to perform on April 11 and Stefani was likely to appear on March 28.
Thursday's episode also saw the return of season-three winner Fantasia (who joins The Color Purple on Broadway on April 10) and the elimination of the first four semifinalists.
Paul Kim, whose gimmick was singing in bare feet, was first to get the boot, followed by Amy Krebs, criticized by Simon for being unmemorable. Nicole Tranquillo, who was perhaps overambitious in singing a Chaka Khan song, was the third singer axed, followed by Rudy Cardenas, who opened Tuesday's show with an erratic rendition of "Free Ride."