The 1940's brought a new silhouette in women's fashion. Jackets and shirts came with shoulder pads in them. This gave a broad shouldered look. Women made an effort to make their waist thin. Synthetic fabrics became popular due to war shortages. Nylon was used more frequently than ever before.
Plain colored and simple suits.
Men's fashion reflected the tone of the country at war. Grey and neutral colors came back from the WWI era and, like women, they wore clothes made of synthetic materials. All of the fabrics previously used for clothing were pumped into making war supplies. A suit called the "zoot suit" became popular. It was made of a large jacket over loose flowing trousers and often worn most commonly in night clubs. Wearing this suit was considered unpatriotic because it went so far against the rations given.