Conservative teenagers, especially in the US wore a style that came to be known as &quot;preppy.&quot; Preppy fashions are associated with classic and conservative style of dressing and clothing brands such as Izod Lacoste, Brooks Brothers, Polo Ralph Lauren and clothing from The Gap. It was considered &quot;preppy&quot; to wear a sweater tied loosely around the shoulders.      http://talem.hubpages.com/hub/Pulling-Off-A-Preppy-Style