A corset is a garment worn to mold and shape the torso into a desired shape for aesthetic or medical purposes (either for the duration of wearing it, or with a more lasting effect). Both men and women are known to wear corsets, though women are more common wearers.
The most common and well-known use of corsets is to slim the body and make it conform to a fashionable silhouette. For women this most frequently emphasizes a curvy figure, by reducing the waist, and thereby exaggerating the bust and hips (see photo). However, in some periods, corsets have been worn to achieve a tubular straight-up-and-down shape, which involves minimizing the bust and hips.
For men, corsets are more customarily used to slim the figure. However, there was a period from around 1820 to 1835 when an hourglass figure (a small, nipped-in look to the waist) was also desirable for men; this was sometimes achieved by wearing a corset.
An overbust corset, like body shapers, encloses the torso, extending from just under the arms to the hips. An underbust corset begins just under the breasts and extends down to the hips. Some corsets extend over the hips and, in very rare instances, reach the knees (example). A shorter kind of corset, which covers the waist area (from low on the ribs to just above the hips), is called a ‘waist cincher’. A corset may also include garters to hold up stockings (alternatively a separate garter belt may be worn for that).
Normally a corset supports the visible dress, and spreads the pressure from large dresses, such as the crinoline and bustle. Sometimes a corset cover is used to protect outer clothes from the corset and to smooth the lines of the corset.