Fashion refers to a social pattern in clothing, accessories, footwear, hairstyles, or behaviour that is favoured for a time by a large number of people within a particular culture or subculture. It is a dynamic and ever-changing phenomenon influenced by social, cultural, economic, and technological factors. Fashion can reflect current trends, social status, and individual identity, and it often involves a process of adoption, diffusion, and eventual obsolescence as new styles emerge. It is a form of collective behaviour that can be driven by designers, celebrities, media, and peer influence. The study of fashion in sociology examines its role in social differentiation, group affiliation, and the expression of cultural values. Trends in fashion can spread rapidly through modern communication channels, creating a sense of shared identity among those who adopt them.