In the fourth-season opener, the new crop of designers invades New York City. It's pins-and-needles time when the first challenge finds the newbies racing to design whatever they want. They are given 10 minutes to grab from $50,000 worth of fabric in three tents set up in Bryant Park to create a garment that best reflects who they are as a designer.

The designers are asked to create a two-piece garment for Sarah Jessica Parker's "Bitten" line. After pitching their designs, Parker chooses seven who will be team leaders, working in teams of two to create the design. They have $15 and one day to complete their look.

The designers are asked to create a menswear outfit for Tiki Barber to wear on The Today Show. They have $150 and two days to complete their looks.

Each designer must pick one of 12 outdated fashion trends. Then, working in teams of three, they must incorporate all three trends into a cohesive mini-collection of three looks. They have $225 and two days to complete their outfits.

Each designer must create an outfit for a woman who has recently lost weight. The new outfit must incorporate aspects of the now-thin woman's personality, as well as the designer's own style. They are given one of the woman's outfits from before her weight loss as raw material for the new design, $10 to use for additional materials, and one day to complete the challenge.

Designers are asked to create a garment using any materials available at the Hershey's store in Times Square. They have only five minutes to collect materials and one day to complete the outfit.

The designers are challenged to create prom dresses for a group of 16 and 17 year old girls. They have $250 and two days to finish the garments.

After designers are randomly paired the teams are asked to create an avant-garde outfit based on inspiration from their models' hairstyles. They have $300 and two days to create this look. Later, each team is asked to create a ready-to-wear outfit which embodies the essence of their avant-garde look. For the second piece, the designers have an additional $50.

The designers are tasked with creating an iconic look using deconstructed denim while also showing off the Levi's 501 legacy. They are given three minutes to collect provided denim (jeans, jackets, and cotton fabric) and one day to complete their designs.

The designers must design an outfit for a WWE Diva that matches her attitude and can be worn in the wrestling ring. They have $100 and two days to complete the looks.

Given 45 minutes in three galleries at the Metropolitan Museum of Art, the designers must select a piece to use as inspiration for an outfit. They have $300 and two days to complete their designs.

All the Season 4 designers reunite to dish on what really happened during the season. One designer is given $10,000 as the "Fan Favorite" contest winner.

The finalists are given five months and $8000 to design a 12-piece collection for Fashion Week. In the interim, each gets a special visit in their hometown from Tim Gunn. Upon returning to New York City, two designers will go head-to-head for the chance to show their collection.

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 16 new contestants are introduced and face their first challenge. The designers are asked to create a look using only materials purchased from a grocery store. They have $75 and one day to complete their outfits.

The designers are asked to create a cocktail dress, using environmentally friendly or conscious fabrics, with their models as their clients. They have $75 and one day to finish their garments.

The designers are tasked to create a look inspired by the nightlife of New York City. They have $100 and one day to complete their designs.

The designers must create a women's wear look for the 2008 Summer Olympics Opening Ceremonies. They have $150 and one day to complete their designs.

Brooke Shields gives the designers their next challenge, to make an outfit she will wear on her television show Lipstick Jungle. They pitch their ideas to Shields, who chooses half of them as team leaders to be paired randomly with the remaining contestants. The designers have $150 and one day to complete their looks.

Former contestant Chris March returns to give the designers their next challenge: make an outfit for a drag queen. They have $200 and two days to complete their designs.

The designers are asked to make an outfit from the spare parts and raw materials of a Saturn hybrid car. They have four minutes to collect their materials and one day to complete their outfits.

The designers are taken to the offices and design showroom of fashion living-legend Diane von Fürstenberg. Their challenge is to create a look for her Fall 2008 collection, inspired by the movie A Foreign Affair. They have 15 minutes inside von Fürstenberg's sample room to select fabrics and one day to complete the outfit.

The designers are paired up with eliminated contestants and asked to create an avant-garde garment inspired by one of their two astrological signs. They have $250 and one day to complete the look.

The designers are assigned recent college graduates and are tasked to give them a fashion makeover to help them enter the workforce. Each designer was to gear their look to their client's specific profession, while keeping their individual style. They have $100 and two days to complete their look.

The contestants are given the task of designing for each other, inspired by different genres of music. They have $150 and one day to complete the challenge.

The contestants head to the New York Botanical Garden to design an evening gown inspired by nature. They have $250 and two days to complete their dress.

The remaining designers are given two months and $8000 to design a 10-piece collection, plus a wedding gown, for Fashion Week. In the interim, each gets a special visit in their hometown from Tim Gunn. Back in New York City, the designers are given one more task, create a bridesmaid dress to go with their wedding gown.

In the conclusion of the finale, the remaining contestants pare their 12-piece collections down to ten. Then they present their lines to industry insiders at Fashion Week.

With luggage still in tow, 16 new designers are greeted at the iconic TWA Hotel at JFK airport. Paired off, they receive their first assignment: to create innovative jumpsuit and cocktail looks inspired by humanity's continued push into space exploration. They have $400 per team and two days to complete the challenge.

The designers must create a chic street style look using animal prints while taking inspiration from the upcoming film "Cats." They have $250 and two days to complete the challenge.

The designers are tasked to create a party cocktail dress using winter holiday decorations. They have two days to complete the challenge.

The designers must create a look for Karlie Kloss to wear to a Parisian event made of fabrics upcycled from garments found at Goodwill. They have $150 and one day to complete the challenge.

Split into two teams, the designers must create cohesive mini-collections that pay homage to Cyndi Lauper and her iconic fashion style, including their own accessories. They have $300 per team member for fabric, $200 per team for accessory materials, and two days to complete the challenge.

The designers are asked to create any look of their choosing using their own personal heritage as inspiration. They have $300 and one day to complete the challenge.

The designers must create a look in collaboration with artist Ashley Longshore, using her custom pop art prints as both inspiration and fabric. They have $175 and two days to complete the challenge.

The designers are tasked to create an editorial look using sheer fabrics. They have $300 and one day to complete the challenge.

The designers must create a look that reinvents the classic tuxedo in a modern way. They have $600 and two days to complete the challenge.

The designers are asked to elevate tie-dye into a runway-chic look using fabric they create. They have $175 and one full day to complete the challenge.

For this challenge, the designers are paired up with an athlete competing in the Summer 2020 Olympic or Paralympic Games and they must make them their dream outfit for a victory night celebration. They have $400 and one day to complete their garments.

The designers must create an avant-garde look that is anything but ordinary for a showing at one of New York City's newest landmarks, The Vessel. They have $600 and two days to complete the challenge.

Each of the remaining designers is given five months and $10,000 to design a 10-piece collection for Fashion Week. In the interim, each gets a special visit in their hometown from Christian Siriano. Back in New York, they must choose three of their looks to show as part of a mini-collection 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. They are given an additional $400 to spend at Mood to finish their looks. Then they present their lines to industry insiders at Fashion Week.