The document discusses the fashion cycle and theories of fashion movement. It explains the stages of the fashion cycle as introduction, rise, peak, decline, and obsolescence. Fashions move through this cycle at different rates, with some becoming classics that remain popular for longer. Fads are short-lived trends. Factors like consumer acceptance, economics, and marketing influence how fashions move through the cycle. Theories of how trends diffuse include the trickle-down theory of high-status groups influencing trends, and the trickle-up theory of lower-status groups starting trends that spread upwards.