In clothing, a bodysuit, or body, is a leotard-like garment that may or may not have snaps at the crotch. It is usually form-fitting and sleeved, although some are sleeveless and are cut like a tank top. Although bodysuits for men do exist, they are more commonly worn by girls and women as lingerie, underwear, or foundation garments. Bodysuits may be also be worn as a top for the smooth line it gives or because it cannot become untucked from one's trousers or skirt.
Onesies (or snapsuits) are bodysuits for younger children and toddlers.