The designers faced a team challenge this week on 'Project Runway' (Thurs., 9PM ET on LIFE) and the theme was rock and roll music.

Each team had to design a look for an emerging band to wear on the cover of 'Rolling Stone.' The guest judge this week was 'American Idol' alum Adam Lambert, who knows his rock and his fashion, and who didn't pull any punches.

He slammed Anya's Hiawatha-esque creation: "This tunic is like an eight-grade production of 'Hair the Musical.' It just doesn't feel like fashion."

However, he did like the fit of Joshua's pants and the "sexy" zipper -- "It's like rock and roll. Totally."