Who's That Girl? is an empowering self-help book written by Jessi Hempel. The book offers practical advice and insights on how to build a personal brand and make a lasting impression in today's digital age. With real-life examples and actionable tips, Who's That Girl? guides readers on how to harness their unique strengths, overcome self-doubt, and create a powerful personal brand that stands out in a crowded world. Whether you're a professional looking to advance your career or an entrepreneur seeking to build your online presence, this book is a valuable resource.