The designers are challenged to create an avant-garde look that must be able to withstand the water elements of Project Runway's first "rain"-way. They have $300 and two days to complete their garments.

It’s the halfway point and the designers are hitting the road to a denim explosion; in a throwback challenge, they’ll create all denim looks while competing in head-to-head battles where only one designer can be safe from elimination.

The designers have to create an outfit from materials obtained at a party supplies store. They have $100 and one day to complete the challenge.

The designers must each create an outfit to pair with a unique, avant-garde Philip Treacy hat. They have $150 and one day to complete the challenge.

The contestants must create their own fabric designs for a look to be inspired by a moment from their past. They have $100 for supplemental fabric and two days to complete their garments.

The designers must create an outfit appropriate for Heidi Klum's New Balance activewear line. The winner of the challenge will have their design sold on Amazon. Later, Heidi increases the their workload to three outfits and provides additional help in the form of previously eliminated contestants. They have $300 and two days to complete their looks.

The designers must create a look inspired by New York City landmark locations. They have $500 and two days to complete their garments.

Each of the remaining designers is given six weeks and $9000 to design a 10-piece collection for Fashion Week. In the interim, each gets a special visit in their hometown from Tim Gunn. Back in New York, they are given two days to create one additional look to show as part of a mini-collection with two of their existing pieces in order to secure their spot in the final runway show.

In the conclusion of the finale, the remaining contestants ready their collections for the runway. Then they present their lines to industry insiders at Fashion Week. Also includes a contestant reunion.

16 new designers arrive in New York with an eye to being named champion of Project Runway's 15th season. At the launch party, they are given their first challenge: use the party's spirit, aura, and vibe as inspiration (and the decorations as materials) for an outfit of their choosing. They have one day to complete their looks.

The designers must create an outfit to flatter all body types, with the winning look to be sold by JustFab.com. They have $150 and one day to complete the challenge.

The designers are asked to create an avant-garde look inspired by Shopkins Shoppies characters. They have $300 and one day to complete the challenge.

For this unconventional challenge, the designers are asked to create an elegant cocktail dress using materials from an actual cocktail bar. They have two days to complete their looks.

With the models as their clients, the designers are asked to create a street style look for them. They have $200 and one day to complete the challenge.

Working in pairs, the designers must use men's fabrics and styles to create a fashion-forward Fall outfit for their female models. They have $100 per team for supplemental fabric and one day to complete the challenge.

In the conclusion of the finale, the remaining contestants ready their collections for the runway. Then they present their lines to industry insiders at Fashion Week.

The all-stars are tasked with creating a runway look using toys for FAO Schwarz.

The designers are each assigned a man's vintage suit which will serve as the materials and inspiration for a high fashion look. They have $100 for supplemental fabric and one day to complete the challenge.

In three teams, the designers are asked to create a high fashion, five-look collection out of recycled materials. They have one day to complete the challenge.

The runway is converted into a Winter Wonderland as the designers are tasked with creating a winter-themed look. They have $400 and two days to complete the challenge.

The must create editorial looks specifically inspired by internationally renowned model Coco Rocha. They are tasked to show their artistic range by delivering not only the perfect garment, but the perfect photograph to show it off. They have $800 and two days to complete the challenge.

The jockstrap is back; the all-stars must create high-fashion looks featuring couture undergarments in this one-day challenge; fashion icons Sergio Hudson and Paulina Porizkova help separate the hot from the not.

In the conclusion of the finale, the remaining contestants ready their collections for the runway. Then they present their lines to industry insiders at Fashion Week.

The designers are tasked with creating modern, age-appropriate looks for a young girl based on the BeForever line of American Girl dolls. They have $150 and one day to complete the challenge.

16 new designers arrive in New York City to compete to be the 16th winner of Project Runway. For their first challenge, the designers must create a red carpet look that showcases their fashion point-of- view. But the real surprise comes when the designers learn they will be working with models of all sizes this season. They have $300 and one day to complete their garments.