What is "maidenform"

Maidenform Brands is a manufacturer of women's underwear, founded in 1922 by three people: seamstress Ida Rosenthal; Enid Bissett, who owned the shop that employed her; and Ida's husband, William Rosenthal. They rebelled against the flat-chested designs of the time and instead produced both dresses and support undergarments, particularly bras that accentuated the natural shape of a woman's figure, hence the name Maidenform.