Season 15 Premieres September 15 at 9/8c

Project Runway Blog

Celebrity Guest Judge ... Revealed!

By Tracy_Goldenberg 10/01/2009 01:41PM GMT

Here's a sneak peek of "Project Runway" Season 6 guest judge Christina Aguilera with host Heidi Klum. The Grammy Award-winning songstress will hit the runway on the October 15 episode at 10 pm et/pt.

What will the challenge be during her guest appearance? Post your guesses here on the blog!