This book offers the most comprehensive and in-depth exploration of applied psychology in fashion to date, drawing on cutting-edge research and theory from across psychology and related disciplines. It examines the relationship between fashion, dress, and the self; the psychological impact of dress and fashion industry practices on consumers and the industry's workforce; and the role of psychology in understanding fashion consumption, sustainability, and digital innovation. Bringing together perspectives from areas such as social, personality, cognitive, clinical, occupational, and positive psychology, the authors investigate how fashion influences the self, mental health, and well-being. They also explore how psychological insights can inform inclusive design, ethical marketing, and sustainable fashion practices. The volume highlights the concrete contributions psychologists can make to steer the fashion industry towards a healthier, more inclusive, and environmentally responsible future. This is an essential resource for students, researchers, and professionals working in fashion psychology, fashion design, marketing, and management. It will also appeal to those interested in the broader cultural and psychological dimensions of fashion.