Bedwear, briefly, is clothing worn while sleeping. The two most common types of bedwear are nighties and pajamas. Nighties are usually a single piece of clothing, typically made of cotton or silk, that covers the body from the neck to the feet. Pajamas, on the other hand, are two-piece garments consisting of loose-fitting trousers and a top. Both nighties and pajamas are designed to be comfortable and provide warmth while sleeping.