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.

Fourteen designers return for the season; the designers create collections inspired by new York's uptown or downtown scene.

The designers must create feminine looks from the masculine materials at a construction site in an unconventional challenge.

With exclusive access to the Broadway musical, "Wicked," the designers compete to create couture inspired fashion.

The designers must create colorful party dresses inspired by their personal relationships.

The clothiers meet British royalty in London as inspiration to create winter fashions. Guest judge: Debra Messing

The stakes are high as the designers roll the dice on the runway for a fashion gamble.

The designers must create looks for Match.com singles to wear on first dates.

The designers must create elegant resort wear with swimsuits, but first they must collect their fabric from under the water.

The designers must use marine life as inspiration for avant-garde fashion; one designer doubles the budget by swimming with sharks.

Alyssa and the judges take over Times Square to educate the designers in the business of fashion for a QVC separates challenge.

The designers must use Marchesa's showroom as inspiration to create bridesmaids' dresses.

Marilyn Monroe's timeless beauty inspires the designs of red carpet gowns; a Hollywood legend visits the workroom.

The finalists design collections representing the four seasons of the year; the winner is chosen.

Alyssa Milano reunites all 14 designers to debate the fashion, fights, and turmoil from this season; moments and drama from inside the workroom; the designers give updates and answer viewers' questions.

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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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 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 designers celebrate Baroque fashion by creating couture-inspired gowns.

Marchesa's Keren Craig and Supermodel Coco Rocha guest judge.

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

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

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

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

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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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Eight all-star Rookies and eight returning all-star Veterans battle to create cohesive collections in the biggest season in All Stars’ history.

Designers tear, dye and burn to create distressed fashion for a post-apocalyptic runway. Danielle Brooks guests.

Designers pair up to create fashion inspired by food and wine pairings. Whoopi Goldberg joins the judges for All Stars’ first ever double elimination.

In the notorious unconventional challenge, designers use all types of balls to create modern day “ball gowns.” Kacey Musgraves guests.

Designers create looks to celebrate a woman’s inner superhero. Supermodel Karolina Kurkova guests.

Betty Boop joins Alyssa on the runway to challenge the designers to create young, chic Hollywood looks. Rebecca Minkoff guests.

RuPaul and Jesse Tyler Ferguson join the judging panel for a spectacular avant-garde runway.

Isaac Mizrahi’s exhibit serves as inspiration for colorful party looks. Legendary supermodel Carmen Dell’Orefice is a guest judge.

Zac Posen invites the designers into his personal studio to gather material for red carpet looks that showcase a signature technique. Zac Posen and Rosie Perez guest judge.

Designers face off against one another to create performance wear for a music superstar. Olivia Culpo guests.

Nina Garcia challenges the designers to create resort wear inspired by different Candy Crush lands. Nina Garcia and Kelly Osborne guest judge.

At the Smithsonian in Washington, DC, designers are challenged to create 6-piece collections. A surprise runway sends one designer home early. Dita Von Teese guests.

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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.