From LIFE's photo archive... "Teenage boys sporting their latest shoe fad of wearing G.I. shoes (Army surplus they bought or inherited) which they call "My old lady's Army Shoes" & wear every Tuesday at school. Date taken: December 1948" "Teenage boys wearing the latest fad, hats. Date taken: November 1947" "Patrons inside a Manhattan bar called P.J.'s Saloon include men wearing shorts, a new fad. Date taken: July 1953" (bermuda shorts) "Theater students at Wellesley College preparing a stage set. (note girls clad in denim, the latest fad). Date taken: October 1949"