Young woman posed in lace gown and cap. A peignoir is a long outer garment for women which is frequently sheer and made of chiffon or another translucent fabric. Nightwear is clothing designed to be worn while sleeping. The style of nightwear worn may vary with the seasons, with warmer styles being worn in colder conditions and vice versa. Some styles or materials are selected to be visually appealing or erotic in addition to their functional purposes. Photographed by Stadler, 1912.