Young Blonde Girl Undresses From The Blue Underwear In The Museum

Women of the 1930s brought the corset back, now called the "girdle". The garment lacked the whalebone and metal supports and usually came with a brassiere (now usually called a "bra") and attached garters.
During World War II, elastic waistbands and metal snaps gave way once again to button fasteners due to rubber and metal shortages. Undergarments were harder to find as well, since soldiers abroad had priority to obtain them. By the end of the war, Jockey and Hanes remained the industry leaders in the US, but Cluett, Peabody and Company made a name for itself when it introduced a preshrinking process called "Sanforization", invented by Sanford Cluett in 1933, which came to be licensed by most major manufacturers.
Meanwhile, some women adopted the corset once again, now called the "waspie" for the wasp-shaped waistline it gave the wearer. Many women began wearing the strapless bra as well, which gained popularity for its ability to push the breasts up and enhance cleavage.