A skin-tight garment is a garment that is held to the skin by elastic tension . Many skin-tight garments are also one-piece garments.

Skin-tight garments -- or more accurately, snug and closely fitting 'skins' provide protection from injury while swimming and diving, including reduced muscle vibration, protection from cuts, stings and abrasion, and as effective protection from UV rays of the sun. These include diveskins, wetsuits, and shrink to fit jeans.

Skin-tight garments are fetishized by some people, perhaps on the basis that the garment forms a "second skin" that acts as a fetishistic surrogate for the wearer's own skin. The most common forms of this are spandex fetishism and rubber fetishism, in which the skin-tight material is also shiny.

Skin-tight garments are often depicted as "futuristic" clothing in science fiction: see also sex in science fiction.

Examples include:

• bodystockings
• catsuits
• jeans or Levi's
• diveskins
• jammers
• leotards
• one-piece swimsuits
• stockings
• tights
• unitards
• wetsuits