F. Scott Fitzgerald had a style 1920s, double-breasted vests, often worn with a single-breasted jacket, also became quite fashionable. During the 1920s, men had a variety of clothes available to them, including sweaters and short trousers, commonly known as knickers. For formal occasions in the daytime, a morning suit was usually worn. For evening wear men preferred the short tuxedo to the tail coat, which was now seen as rather old-fashioned and snobby.