Joe Lycett hosts the semi-final, as the four remaining sewers take on garments and techniques from around the world. Firstly, they must follow a pattern like none they've encountered before, as judges Patrick Grant and Esme Young ask them to make a pair of Indian Dhoti Pants. Next is the Transformation Challenge, as the sewers take on a garment from West Africa, the Dashiki. For their final challenge, the Made to Measure, the semi-finalists take on the fiendishly tricky high-end Japanese couture technique of origami.