Influence: The Psychology of Persuasion by Robert Cialdini is a fascinating book that explores the psychology behind why people say 'yes' and how you can apply these principles to your own life. While not specifically a fashion book, it offers valuable insights into the power of persuasion and how it can be used in the fashion industry. From understanding the influence of social proof to harnessing the power of scarcity, this book will give you a deeper understanding of the psychology behind fashion trends and consumer behavior.