Muslin is a light, soft plain-weave cotton fabric commonly believed to be named after Mosul, Iraq (some scholars suggest Masulipatnam, India). Thin and semi-sheer, muslin breathes well and is kind to the skin, so it was historically used for summer clothing, swaddling, curtains and stage props. In tailoring muslin plays a special role: it is used to sew a mock-up (a 'toile') of a garment to test the cut before cutting into expensive cloth. In fashion it is prized for its natural lightness in summer dresses and layered blouses. Being soft, it creases quickly and needs careful pressing.