Swimwear has been an important part of fashion for generations and a reflection of the cultural sensitivities of the times. In the 1900s, for instance, women wore wool dresses that consisted of up to 9 yards of fabric. These outfits were worn with slips that covered the women's legs. Men wore knee-length long johns to the beach. By the 1920s, the hemlines became higher and continued to go up from there. Men began to go topless in the 1930s. The modern female swimsuit exposes much more skin, and men's trunks equally show more leg than precursors.