A nightgown (also called a nightdress) is a loosely hanging item of nightwear nowadays mostly for women. Its length may vary from hip-length (babydoll) to floor-length (negligee) but is typically knee-length.
A short nightgown is often called nightie. A slip nightgown may be used as a nightgown or as a full slip. A shortie nightgown is a functional short nightdress (often just a long or short T-shirt).
