Project Runway All Stars Exclusive Preview: Which Designer Might Be in Jeopardy For the Unconventional Challenge?

Tonight's episode of Project Runway All Stars is the unconventional challenge, aka the hardest challenge in the show's history. And while walking around the workroom as the designers start work on their garments, mentor Zanna Roberts Rossi doesn't seem so confident about all of the designer's creations. We're actually kind of shocked at the one all star's look who she's not so fond of!

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Watch the exclusive clip above to see which designer might be in jeopardy tonight, and tune into Project Runway All Stars tonight at 9pm on Lifetime to find out who gets eliminated. PS: Snooki & Jwwow are the guest judges!

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Do you agree with Zanna's critique? Who's your favorite designer this season? Tweet us @OKMagazine.