14 Mm silk double crepe is suitable for theater costumes water sleeves, wedding dresses, etc. Generally 12 m and 14 m double crepe will not be used to do clothes directly, if you want to do clothes recommended to add a lining or use a double layer.
https://www.tongjinsilk.com/product/silk-crepe-de-chine-fabric/14-mm-100-silk-crepe-de-chine-fabric.html