Claudia Winkleman welcomes the four remaining sewers back to the sewing room. They face three challenges - none of which permit a pattern for guidance. First, they must demonstrate their ability to drape on the stand by making a dress out of a piece of fabric straight onto the mannequin - a practice made popular in the 1930s. Next, they alter a dress by adding a pair of perfectly symmetrical sleeves. Finally, they bring in their favourite garment from home, make a new copy and fit it to themselves. Some play it safe to reproduce simple dresses while others take ambitious risks. Who will be rewarded with a place in the final?