Fashion is a form of self-expression with a specific context, such as time, place and purpose. Example of these are clothing, footwear, lifestyle, accessories, makeup, hairstyle, and body posture. The term implies a look defined by the fashion industry as that which is trending. Everything that is considered fashion is available and popularized by the fashion system (industry and media).

Given the rise in mass production of commodities and clothing at lower prices and global reach, reducing fashion's environmental impact and improving sustainability has become an urgent issue among politicians, brands, and consumers.