PREPPY formal dress style, elegant and modern, symbolizing professional success. He comes from Preparatory School for the schools attended by the children of wealthy families before entering college. In the 1920s Ivy League students dressed british-style with smooth fabrics of defined colors and representative emblems or shields. These prep students created a fad that lasts to this day, with linens of deer prints, pastel tones and other attributes. The professionals continued to dress in the preppy style after graduating as a symbol of success. In the 1950s, brands such as Brook Brothers, Ralph Laureen and Tommy Hilfiger appeared that met that lawsuit.