Unlike any other challenge on Project Runway, the designers need to step it up when they are challenged to create avant garde looks that will be able to stand up to the elements, especially the rain. This time, the runway will be transformed into a rainway! Star of Showtime's Master of Sex, Caitlin Fitzgerald will guest judge.

For the challenge, the designers will have to hit the New York City streets to find their muse. They must each convince a complete stranger to undergo a makeover by Mary Kay as they design a look for them. Model Asha Leo and True Detective actress Michele Monaghan guest judge.