1920s shawls, capes and scarf coats were made of silk, lamé, velvet, satin, and gold or silver brocades with Dolman, bat-wing or kimono sleeves. Popular colors were black, jade, sapphire, and raspberry. Usually, they were worn over sleeveless evening gowns in summer to keep the night chill off. Fancy Great Gatsby-style shawls were dripping in long fringe and were delicately beaded or embroidered into Asian prints. The popular long 1920s kimono jacket was the inspiration for 1920s Art Deco shawls, capes and light coats.
In winter, a full or half-length 1920s fur shawl kept the arms warm while traveling in cold cars. Smaller fur stoles and fur shrugs topped lighter scarf coats or were worn over heavy wool cape and coats. The feather boa was not accurate to the 1920s. Rather, it came about in the flapper revival in the 60s.
Read this to get ideas about how to wear a 1920s style evening wrap, coat or scarf.