A nightgown is most commonly a loosely fitted lingerie exclusive designed for women as nightwear. They are also known as nightdress. Silk, satin, cotton, and nylon are some of the most common fabric for night gowns. The fancier design could apply lace and embroidery at bust and hem. Some of the designs in nightgowns are cap sleeves, sleeveless, shoulder strap back strap or may have necklines also.