Project Runway Season 18 Episode 4

Mega-stylist to the stars, Karla Welch is here to guest-mentor the designers and she's got a job for them – dress her client: the one and only Karlie Kloss! Karla's got a twist though, the materials used to design the look will be donated clothing from a local Goodwill, making this Project Runway's first upcycling challenge.