Nightwear is clothing designed to be worn while sleeping. The style of nightwear worn may from one season to the next, with warmer styles being worn in colder conditions. Some styles or materials are chosen to be visually appealing, sometimes in addition to their functional purpose of warmth.

Instances of types of nightwear include babydolls (short, sleeveless, loose fitting nightgown), blanket sleepers (warm garment for children), chemises (similar to a babydoll but tighter at the hips), funzees (allinone sleepsuit made of cotton), negligees (loose nightwear for women), nightgowns (loose nightwear made of cotton, silk and other fabrics), nightshirts (loose fitting garment), nightcaps (warm cloth cap), peignoirs (long outer garment made of chiffon), pajamas (loose fitting two-piece garments). There are also boy shorts, PJs and bloomers, robes, tops and sleepshirts, the range of nightwear is so vast that virtually anybody can choose some items to spice up their wardrobe.

For instance, the Elle Macpherson Intimates Dentelle Camisole is quite inexpensive, it features a stylish lace finish all across the bust area, so it shows a contrast under the layer. It also has a lace trim, slim straps and a smooth and silky finish to the body.

The Elle Macpherson Intimates Dentelle Shorts also come at an affordable price. These shorts feature a smooth silky finish and they also feature a lace trim and a bow detail at the waistband.

Moreover, the Calvin Klein Cotton Stretch Logo Trim Camisole Top comes for a better price than ever. The stretch cotton camisole top designed by Calvin Klein also comes with matching pants, still available on the stock. The camisole has a scooped neckline with contrasting logo trim and straps.

There are many other types of garment that are frequently worn for sleeping, in particular clothing otherwise used for physical education, but these are usually not referred to as nightwear, since they may also be worn during the day and in public.