The amateur sewer competition hosted by Joe Lycett continues. This time, the four remaining contestants take part in the semi final, creating garments inspired by silver screen. First, the semi-finalists must follow a pattern like none they have encountered before, as judges Patrick Grant and Esme Young ask them to make a dress inspired by Marilyn Monroe's in The Seven Year Itch. In the Transformation Challenge, the sewers have to make a sci-fi inspired outfit in just 90 minutes, before creating a made to measure flapper dress for the final task of the semi final.