Who's that Girl? is an empowering self-help book written by Jessi Hempel. In this insightful guide, Hempel explores the concept of personal branding and how individuals can create a strong and authentic identity in the digital age. Through real-life examples and practical advice, Who's that Girl? helps readers understand the importance of personal branding in various aspects of life, including career, relationships, and personal growth. This book is a valuable resource for anyone looking to enhance their self-image and make a lasting impression in today's competitive world.