WOmen's Fashion
1920's fashion gave way to the flapper girls. The flapper look was shockingly different than the past decades. Dresses were shorter, brighter, and flashier. Girls wore loose clothing that made movement easy. The waistline of women's clothes was dropped to the hip. Jewelry became increasingly popular. High heels were the popular shoe choice. Bras were first introduced in this time. Flappers were seen as "giddy, attractive, and slightly unconventional." The short "bob" hairstyle was re-popularized in this era. Smoking in public, closer dancing, shorter hair, and more makeup all characterized the typical 1920's woman.
Menswear
Men's suit jackets were shorter than the old long tailed jackets. Trousers got wider, and the 'knicker' (short trouser) became popular as casual menswear. You could usually tell a man's social class based on his hat. Upper class men wore top hats, middle class men wore fedoras, and low class men wore standard newsboy hats.