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."

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

The remaining All Stars are confronted with their toughest challenge yet; use lighting technology to create an avant garde design to be judged by music legend Pharrell Williams. The lights are dimmed for a Runway show unlike ever seen before!

To determine which three All Stars make it to the finale, the designers get a lesson in the business of fashion. The winning outfit is produced by designer Nanette Lepore and sold nationwide for charity.

The final three All Stars have just four days to create a signature collection for a VIP red carpet Runway show. After a visit to Joanna Coles at Marie Claire headquarters plus some surprise visitors to the workroom, Angela reveals the final All Stars twist.

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?

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.

Graffiti artists help the designers tag their fabric with spray paint from which they must create wearable art. Designers Robert Tagliapietra and Jeffrey Costello serve as guest judges.

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.

The designers create edgy, androgynous apparel in a challenge that comes with a twist. Guest judges: Jason Wu and Robert Rodriguez.

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 seven remaining designers play naughty or nice in the fan-favourite unconventional challenge that brings them to a Christmas décor emporium. The designers will have to impress guest judges singer Kylie Minogue and television personality LaLa Anthony.

High Fashion meets a Retail Budget! The five remaining All Stars must create a ready to wear look with a "wow factor," while also meeting a retail budget. With Elie Tahari as this week's guest judge and mentor, the designers all compete for the chance to have their design manufactured, featured and sold in Elie Tahari's stores and online! Stacy Kiebler also guest 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 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 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.

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.