A unitard is a skin-tight one-piece garment with long sleeves and legs. It differs from a leotard in that a leotard does not have long legs.
Unitards are worn by acrobats, gymnasts, dancers and circus performers[?], as well as others.
Unitards can also be worn as lingerie and are eroticised by some people, often as part of a wider spandex fetishism.
See also: