A skin-tight garment is a garment that is held to the skin usually by elastic tension using some type of stretch fabric. Commercial stretch fabrics ('elastomerics') such as spandex or elastane came onto the market in 1962, and revolutionized many areas of the clothing industry. A wide variety of clothing may be made to be skin-tight, and it is common for clothing to be skin-tight for some uses, such as in stockings, bodystockings, swimsuits and women's bras.

Spandex, Lycra, or elastane is a synthetic fiber known for its exceptional elasticity. It is a polyether-polyurea copolymer that was invented in 1958 by chemist Joseph Shivers at DuPont.