Heidi Klum Teams with New Balance on "Project Runway"

Heidi Klum Teams with New Balance on

Shes always up for a cool collaboration, and Heidi Klum joined forces with New Balance to bring the treadmill to the runway!

During the September 5th episode of Project Runway, the designers awoke to Tim Gunn dressed as a referee, and were taken to a fashionable field day challenge.

And of course, Heidi and the crew all sported duds from the Fall 2013 Heidi Klum + New Balance Collection, on sale now!

Klum shared, My favorite part of this episode was challenging Tim Gunn to sport a referee uniform! Hes usually very dapper in a suit so it was fun to get him out of his comfort zone, and he looked so cute!

We had a really tough time choosing a winner for this challenge. A couple of the designers did a really great job. Ultimately, we loved Helens jacket and leggings. She created pieces that had the perfect mix of function and fashion and Im excited to have them as a part of my line. I think everyones really going to love the look.