The three fabrics that would make it possible to create some fashions reminiscent of the 1940s look would probably have to be cotton, wool, and silk. There were no synthetic fabrics available in those days, with the possible exception of rayon. Clothing wrinkled easily. Everything made of cotton had to be ironed, and everything made of wool had to be hand washed. There were lots of wool tweed jackets, skirts, trousers, such garments. Nylon stockings were not available until after World War II ended. Women wore silk stockings, and these easily developed runs and also tended to sag. Wool tweed would be most representative of the 1940s look. Also, nearly everybody wore hats, both men and women, and they were typically of wool except in summertime. There was no plastic. Belts, purses, shoes, etc., were all natural leather.