Willy Wonka inspires the designers to create new inventions in fashion for an avant-garde runway; guest judges Andrew Rannells and Anna Camp.

An "opposites attract" theme tasks the designers to create red-carpet gowns for the Academy of Country Music Awards. Appearing: the country group Little Big Town.

The designers must tap into their past to create a look inspired by a moment that kick-started their fashion career.

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A star of Broadway's "Finding Neverland" challenges the designers to re-imagine looks for classic fairy-tale characters.

Fashion designer Zac Posen and actress Debi Mazer join the judges to critique sophisticated summer looks with an edge.

Miss Piggy takes charge as client and guest judge when the All Stars create a cocktail dress for the Muppets' most demanding diva. Will the designers live up to the high standards of this international fashion icon?

13 of Project Runway's most creative and contentious designers return for a second chance at the biggest prize ever. In the season's first team challenge, the designers flaunt their fashion attitudes in more ways than one. New host, supermodel Carolyn Murphy, joins mentor Joanna Cole and judges Isaac Mizrahi and Georgina Chapman for this season, guest judged by previous All Stars winner Mondo.

The designers celebrate Baroque fashion by creating couture-inspired gowns. Marchesa's Keren Craig and Supermodel Coco Rocha guest judge.

The designers must combine sports and fashion to create high-end leisure wear inspired by the "Touch By Alyssa Milano" line.

Four surprise guests return to advise the designers as they create print-on-print looks for Nina Garcia; two designers battle to make the finale.

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The All Stars are challenged to create evening resort wear from fabric preselected by another designer.

The Unconventional Challenge finds the designers turning New York City emergency services materials into runway-worthy looks.

A challenge features a naked runway and centers on naturists who need winter wear to stay warm.

The final six All Stars are tasked with designing a look for one of three vintage 1920's events. To make matters worse, they must face off against each other in pairs of two in this season's Fashion Face Off! Actress Gretchen Mol and designer Jenny Packham serve as guest judges.

The three remaining designers compete in the final for a chance to win a life-altering grand prize! However, because this is All Stars, the final three designers only get four days and an hour and a half at Mood, to complete a full mini collection. With the help of previously eliminated designers, the final three duke it out and give it all they've got to prove who Project Runway's true All Star is. Who will win the biggest prize in Project Runway history? Stay tuned to find out! Actress Liv Tyler and designer Marherita Missoni serve as the guest judges.

America's favorite housewife, Marge Simpson, turns to the All Stars to design a date night dress for an exciting evening out on the town with Homer. Guest judges Anthony Ryan Auld, designer Stacey Bendet and actress Abigail Breslin help to determine whose dress Marge will wear on a future episode of "The Simpsons".

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13 of Project Runway's most talented and controversial designers return for a second chance at victory. New host supermodel Angela Lindvall reveals an All Stars twist to what all designers love to hate -- the unconventional challenge! The All Stars are greeted by a new mentor, Marie Claire's Joanna Coles before facing new judges Georgina Chapman and Isaac Mizrahi.

The All Stars have just 24 hours to create glamorous ball gowns for a night at the Opera. Guest judges are kings of the red carpet, fashion duo Mark Badgley and James Mischka.

Fashion icon Diane Von Furstenberg joins Angela on the Runway to reveal the fastest challenge in Runway history. It's a race against time as the top ten All Stars have only six hours to create a colorful look for supermodel Miranda Kerr.

The All Stars take to the streets of New York to convince total strangers to part with their clothes in the name of fashion. Their muse's outfits are ripped apart and reborn in the hands of an All Star.

The eight remaining All Stars compete head to head fin a sportswear challenge for one of the four seasons. Guest judge Cynthia Rowley.

It's all about Broadway baby, when the designers compete for their Broadway debut. The award winning composer of "Wicked" Stephen Schwartz, challenges the All Stars to design an outfit for the Broadway musical "Godspell."