The competition is tougher than ever as three winners of Project Runway return to defend their titles. The task at hand--to create a fashion-forward punk look inspired and judged by punk rock icon Debbie Harry of Blondie.

At the American Museum of Natural History, creepy crawly arachnids and insects serve as inspiration for the designers to create an avant-garde look. Guest judges are Project Runway season 9 winner, Anya Ayoung Chee, and jewelry designer Jennifer Meyer.

Signature cocktails at Jay Z's legendary 40/40 Club stir up ideas for runway worthy cocktail dresses. Guest judges are interior designer Nate Berkus and designer Rebecca Minkoff.

It's back to school for the remaining eight designers in this fan-favorite unconventional challenge to create high impact fashion from materials found in an elementary school classroom. Guest judges are actors Michael Urie and Gabourey Sidibe.

The designers pair up to create young modern looks inspired by the 1930s and Lifetime's new mini-series "Bonnie & Clyde." Guest judges are Austin Scarlett, designer Elie Tahari, and supermodel Bar Refaeli.

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".

Six remaining designers are whisked away by helicopter to QVC's headquarters in Pennsylvania where they're challenged to design a stunning red carpet gown. Mondo Guerra, QVC's Lisa Robertson, and actress Elisabeth Moss are guest judges.

Project Runway goes global as the designers team up with some of the most influential fashion bloggers in the world to identify a new trend for 2014. Guest judges are Nina Garcia, Christian Siriano and Calvin Klein's Francisco Costa.

Fashion and commerce collide as the All Stars work with design house Milly to create ready-to-wear looks to be sold for charity and the designers face a shocking twist on the runway. Guest judges are Kristin Chenoweth, Nick Cannon and Milly Designer Michelle Smith.

In the Season Finale, designers present collections inspired by their own heritage at a VIP runway show at the world headquarters of the United Nations. Project Runway's Zac Posen and guest judge Gayle King help to crown the winner.

Alyssa Milano reunites the 11 All Star designers from this season; also includes an appearance by Debbie Harry and unseen footage.

Project Runway winners from the U.S. and around the world compete in the first-ever fashion world championship. With guest judge Debra Messing.

"Project Runway" winners worldwide design sophisticated graduation party outfits; actress Sofia Carson joins the judges.

Season winners face the dreaded "Unconventional Challenge" on board an airplane; Tamron Hall and Martha Hunt guest judge.

International All Stars create outerwear from underwear by transforming corsets into runway looks; Rebecca Minkoff and Olivia Culpo guest judge.

The all-winners season continues with high fashion inspired by zoo animals for a wild night out; Peyton List and Joan Smalls guest judge.

Guests Wendy Williams, Danica Patrick and Lily Aldridge join the judges for red-carpet fashion using metallic fabrics and unique textures.

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

Vanessa Williams and Jasmine Tookes guest judge as "Project Runway" winners turn daytime separates into a sensational nighttime look.

Asia Kate Dillon joins the panel to judge gender-neutral streetwear.

The All Stars battle extreme weather on and off the runway for resort wear that transitions from one climate into another; Cynthia Erivo and Reem Acra guest judge.

Nina Garcia challenges season winners to design modern ball gowns in luxurious silk. Fashion legend Iris Apfel joins the judges.

The remaining All Stars create fashion for “modern” families to secure their place in the finale. Marie Claire’s Editor-in-Chief Anne Fulenwider judges.

Actress Andrea Riseborough helps the judges crown a world champion as designers produce runway collections in front of New York's fashion elite.