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Sustainable fashion is a movement and process of fostering change to fashion products and the fashion system towards greater ecological integrity and social justice. Sustainable fashion concerns more than just addressing fashion textiles or products. It comprises addressing the whole system of fashion. This means dealing with interdependent social, cultural, ecological, and financial systems.^[1]

Sustainable fashion also deals with considering fashion from the perspective of many stakeholders - users and producers, all living species, contemporary and future dwellers on earth. Sustainable fashion, therefore, is the responsibility of citizens, the public sector, and the private sector. A key example of the need for systems thinking^[2] in fashion is that the benefits of product-level initiatives, such as replacing one fiber type for a less environmentally harmful^[3] option. An adjacent term to sustainable fashion is eco-fashion.