The 1940s brought many changes in fashion. At the beginning of the decade, the U.S. was still coming out of the depression years but things quickly changed when women had to join the work force during World War II.
During the WWII years, even fabric was rationed – no nylon for stockings and skirt hems rose slightly. The idea of “separates” became the norm, which allowed women to mix and match pieces to extend their wardrobe and feel that she had many different dresses.
Following the war, it felt good to no longer ration. Christian Dior introduced the “New Look” in 1947 with voluminous full skirts, leading the way to the 1950s.