In our era, we don't think it terribly odd to see someone in an art museum dressed as though they were going to go poll-vaulting standing next to someone else who is clothed as if they were intending to rope a steer. This sort of untraditional-tradition began in the twenties. The attached link will show you a magazine advertisement for men's knickers which appeared at a time when this sort of thinking began to evolve and "knickerbockers" began a new life as an in-town and on-campus fashion choice. Previously, knickers were worn by young boys or strictly for men who enjoyed country sports; other examples of similar active-ware abuse in the Twenties involved the clothing of yachtsmen, hunters and tennis players. This era saw the rise of the sportswear industry.
