Women's Fashion

Flapper style made them look young and boyish. The short "bob" haircut became popular. Flappers did away with their corsets and pantaloons. Without corsets, flappers wore simple bust bodices to make their chest hold still when dancing. Without the added curves of a corset they promoted their boyish look.
Flapper dresses were straight and loose, leaving the arms bare and dropping the waistline to the hips. Rayon stockings were attached to garter belts. Flappers powdered or put rouge on their knees to show them off when dancing.[citation needed] A round hat called a cloche usually finished the look. Perhaps most scandalously, flappers also took to wearing make-up, previously restricted to actresses and prostitutes. Popular flapper make-up styles made the skin pale, the lips red, and the eyes black-ringed.
Despite all the scandal flappers generated, their look became fashionable in a toned-down form among even respectable older women. Most significantly, the flappers removed the corset from female fashion and popularized short hair for women.

Men's Fashion

Men's fashion didn't change much in the twenties; if anything, it became more tapered. The trousers tapered down tightly at the ankles. Fedoras were a major fashion statement of the dashing man, and with the arrival of gangsters like Al Capone, pin-striped suits came into fashion.