US TV
Rex Features
The Mean Girls actress and Aguilera are among the celebrities who are expected to appear during challenges set in the sixth season of the show.
"The girls are very strong on season six. There's a lot of crying, there's fighting going on, there's a lot of drama going on - but especially with the girls," said host Heidi Klum.
Project Runway will see 16 aspiring fashion designers based in Los Angeles battling for the opportunity to display their work at New York Fashion Week.
The show is scheduled to air later this year.
Tube Talk
Ultimate 'Simpsons' Episode: PollVote in Tube Talk's Simpson's 'Ultimate Episode' poll!
2012-13 Season
Two join NBC Anne Heche pilot 'Save Me'Michael Landes and Alexandra Breckenridge will appear in a NBC comedy pilot.
US TV Interviews
Randy Jackson on 'Idol' fainting, pressure: Q&AFive singers faint - and one falls off the stage - on most intense Hollywood Week yet.
US TV Ratings
'NCIS's 200th episode beats 'Glee'NCIS overpowers Glee, while The River stumbles on its debut.
