By People Staff
Updated October 15, 2009 12:00 AM

Look who’s coming to Project Runway!

After guest judging stints from Eva Longoria Parker, Rebecca Romijn Lindsay Lohan and other stylish stars, Christina Aguilera will take a turn, joining Heidi Klum and company (Nina Garcia will also be back!) for tonight’s episode on Lifetime (10 p.m. EST).

Also coming to play, legendary costume designer Bob Macke will give the remaining designers the challenge of creating an elaborate stage outfit for the Grammy-winning singer, whose style has varied over the years from the lingerie of “Lady Marmalade” to the chaps of “Dirrty” to the pinup look of “Candyman.”

Tell us: Who will rock the challenge? And who might hit a sour note?Lifetime