The final three designers - Jay, Kara Saun, and Wendy - each create a collection for showing at New York Fashion Week.
A special reunion episode, the 12 designers all reunite to talk about what happened behind the scenes on Project Runway. When people are confronted and questions are answered, the fabric starts flying.
Five designers remain and their challenge is to redesign the US Postal Service Uniform.
The designers must prepare a swimsuit that also wears as an evening wear during the Fashion Industry party. Columnist Richard Johnson is one of the guest judges from The New York Post's Page Six and he will pick the winner of the challenge.
The designers learn that their selected model will be their client, and they must design a wedding dress of their model's dreams.
Rock singer Sarah Hudson makes a special appearance. All of the designers show them their prospective Rock N' Roll designs and Sarah picks the three whose designs she liked best.
The designers finally have to design something actually wearable. For this challenge, the designers must create a party dress that would appeal to Banana Republic's customers. The winner, instead of being granted immunity, will have his or her dress marketed and sold at select Banana Republic stores.
The designers are to design a dress that represents "envy". As they finish, the designers are surprisedly told that their dresses will be put for sale in a private auction, and whomever gets the most bids the winner of the challenge.
The designers must create a very sexy, glamorous outfit for a night on the town. The twist is that the outfit is to be made only from materials bought at a Manhattan supermarket.