Men’s fashion also became less regimented and formal. Men favored short jackets with two or three buttons rather than jackets with long tailcoats as well as pinstriped suits. Casual-wear for men often included knickers, short pants that came to the knee.[1]
The most formal men's suit consisted of a black or midnight-blue worsted swallow-tailed coat trimmed with satin, and a pair of matching trousers, trimmed down the sides with wide braid or satin ribbon.[5] A white bow tie, black silk top hat, white gloves, patent leather Oxford shoes, a white silk handkerchief, and a white flower boutonnière completed the outfit. The tuxedo vest could be black or white, but, unlike the obligatory full-dress white tie, tuxedos ties were always black. Men usually completed their tuxedo outfit with all the same accessories as the full-dress suit, except that instead of top hats they would wear dark, dome-shaped hats called bowlers. Just like women, men had certain attire that was worn for certain events. Tuxedos were appropriate attire at the theater, small dinner parties, entertaining in the home, and dining in a restaurant. During the early 1920s, most men's dress shirts had, instead of a collar, a narrow neckband with a buttonhole in both the front and back. By the mid-1920s, however, many men preferred shirts with attached collars, which were softer and more comfortable than rigid, detachable collars.