Host Tim Gunn introduces this season's set of designers with home and closet tours of each contestant and give a first look at what's in store for the series' 15th season.

Kicking off the season with an unconventional materials challenge, Heidi and Tim welcome the designers at a season 15 launch party.

In their first team challenge, the designers struggle to make their voices heard. However, this is an unconventional materials challenge and many of them stumble when forced to create a fashion forward look out of recyclable materials. Maggie Q and Anne Fulenwider join the judging panel.

The designers are treated to a private screening of the film Leap! as well as a performance by Hiplet and must draw inspiration for an innovative and edgy design in order to survive another week. Maddie Ziegler is guest judge.

It's the Heidi Klum Sleepwear Challenge and the designers are feeling on top of the world, literally. If a slumber party on the roof of the Empire State Building doesn't bring them the inspiration they need to impress Heidi, nothing will! Demi Lovato joins as guest judge.

A challenge inspired by the film Descendants 2.

The models become much more than runway eye candy as they serve for inspiration to the designers to create a street style look.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.

Heidi Klum hosts a reality series where aspiring fashion designers compete for a chance to break into the industry. Each week, a designer is eliminated from the competition after exhibiting their work in front of a judges' panel.