Diffusion in Fashion basically refers to the way fashion is spread across different countries and cultures and how a fashion trend spreads in different social systems. Diffusion theory refers to the way a particular fashion innovation or new creative trend is adopted by a group of people instead of just a single person. Diffusion in fashion focuses on individuals and also on groups of people, hence focusing on both the small scale and the large-scale institutions in which the spread of fashion takes place in a systematic manner.