Tricle Down Theory e Trickle-down theory (Downward flow theory: The assumption that fashion trends start among the upper class or fashion leaders and move down to the masses or fashion followers. It is based on the traditional process of copying and adapting trend setting fashion from Paris, London, New York designers. World's oldest and most accepted fashion theory described by Veblen in 1899 and Simmel in1904. Asserts that fashions are accepted by people of lower socioeconomic income levels only after they have been worn by people of upper socioeconomic income levels These styles are seen on high-fashion runways. Jackie Kennedy's Barbara Bush's pearls, Nancy Reagan's red, Hillary Clinton's pantsuits in the office