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.