The boning supports the desired shape and prevents wrinkling of the corset fabric. ... This was necessary to force the body to conform to the desired shape of the era. At the time, the most popular materials used for the boning were giant reeds or whalebone. Whalebone was the most commonly-used and most expensive material.
Were whale bones used in corsets?
Corsets were also made of decorative fabrics like satin or silk. The whalebone used to stiffen corsets was technically not bone at all but the teeth-like structures, called baleen, of a baleen whale.
When did they stop using whale bones in corsets?
Whalebone was replaced by cheaper flat spiral-steels at the beginning of the 20th century, and the corset gave way to lighter girdles in the 1920s and 1930s, but in all its forms, corsetry was worn by most women from youth to old age and across social classes until the 1960s.