Nightwear
![A woman's nightgownA man's pajamas](/Images/godic/202501/29/Blacknightie5943.jpg")
![](/Images/godic/202501/29/Two_piece_pajamas5943.jpg")
![In the U.S. 31% of men and 14% of women report sleeping in the nude, while in the U.K. 47% of men and 17% of women do](/Images/godic/202501/29/Sleeping_in_Sepia5943.jpg")
Nightwear – also called sleepwear, nightclothes, or nightdress – 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.