The designers must create a red carpet dress that represents the collection they plan to show at Olympus Fashion Week. With 4 designers left and only 3 spots open for Fashion Week, the competition is fierce. It becomes even fiercer when the designers discover that fashion icon Iman will be the Guest Judge and has agreed to wear the winning dress to a red carpet event. On the runway, each designer makes their final case about why they should move on to Olympus Fashion Week. But in the end, there's only room for 3 and one of them must go home.

Tim Gunn visits the homes of the final three designers, Daniel V., Santino and Chloe and checks in on the progress of their Fashion Week collections. Later, the finalists return to New York to prepare their collections for showing at New York Fashion Week and are surprised to find they must complete one final challenge: an additional garment that they each design with the aid of one eliminated designer of their choice.