To be a fan is to scream alone together. This is the discovery Hannah Ewens makes in Fangirls: how music fandom is at once a journey of self-definition and a conduit for connection and camaraderie; how it is both complicated and empowering; and how now, more than ever, fandoms composed of girls and young queer people create cultures that shape and change an entire industry. This book is about what it means to be a fangirl. Speaking to hundreds of...