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.

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

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

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

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

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.

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

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.

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.

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".

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

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

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

The moment of truth arrives for three final All Stars as they present their signature collections to a VIP Runway show crowd. Guest judges include fashion icon Tommy Hilfiger. Who will claim the biggest prize in Runway history and be crowned the first 'Project Runway All Stars' winner?

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

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.

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

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

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.

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.

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

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

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.

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

At the prestigious United Nations headquarters, Angela challenges the All Stars to choose flags as an inspiration for beautiful dresses. Guest Judge Catherine Malandrino.

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

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

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

Social media and fashion collide when the All Stars must draw inspiration for their runway designs from images sent to them by readers of USA Today. Guest judges are designer Charlotte Ronson and fashion blogging sensation Tavi Gevinson.

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

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

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

The designers go international! For the first time ever in Project Runway history, the designers retire sketching at 1407 for a day of sketching in Paris at the Eiffel tower! The designers also get a once-in-a-lifetime opportunity to tour Valentino atelier and showrooms, and are also invited to a private preview of Valentino's Couture show. With all of their newly acquired Parisian knowledge, the designers return to NYC to design a couture gown of their own that will hopefully secure their spot in the finale! Guest judges to determine who goes to the finale are House of Valentino and Cynthia Rowley.

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

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

The All Stars gather at NYC's Highline and are challenged to create a red carpet gown using only green, eco-friendly fabrics and materials. The legendary Diane von Fürstenberg guest judges.

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.

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."

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

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

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.

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

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

The Project Runway designers pay their tribute to the armed forces! The four remaining designers are paired with four female veterans from an array of different military branches. The designers will have to battle it out to see who can create a design that best suits each veteran for each of the special events they are attending. Special guest judges for this episode include actress Katie Holmes and designer Carmen Marc Valvo.

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.

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 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.

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

The All Stars are tasked with recreating and updating a 70's disco style using Nine West shoes of their choosing as inspiration! Designer Rafe Totengco guest judges.