This report provides a comprehensive analysis of sustainability management within the textile industry, focusing on the circular economy and resource utilization. The study examines six prominent brands: Gap Inc., H&M, Adidas, M&S, Aditya Birla Fashion and Retail, and ASOS, evaluating their initiatives in addressing resource issues. The report delves into the application of circular economy principles, specifically narrowing, slowing, and closing resource loops within the supply chain of each brand. Furthermore, it explores the value dimensions of each company, including value proposition, value creation and delivery, and value capture, providing a detailed assessment of their respective sustainability strategies and their impact on business performance and environmental responsibility. The report concludes by summarizing the key findings and highlighting the evolving landscape of sustainability within the textile sector.