The following report addresses sustainable supply chain management (SSCM) and its application in the fashion industry. The purpose is to draw conclusions on why companies implement sustainability into their processes, and how these sustainable monitoring practices contribute to operational, competitive and financial advantages. This report contains various methods of analysis. Research derived from numerous scholarly articles on measurement methods, theories and governance structures will be discussed to develop a background on the current status of SSCM in the fashion industry, including the notable strengths and weaknesses. To understand the depth of practices involved in managing a sustainable supply chain, four leading companies within the industry will be analyzed using their annual sustainability reports. Based on this analysis, it can be concluded that sustainable practices are abundantly present in today's leading fashion companies, each having different mindsets motivating their sustainable actions. With this conclusion, it's also important to acknowledge that there's far more progress to be made in terms of sustainable development on a company and industry level, in order to make a lasting impact.