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.

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.