Book excerpt: For over a decade, Magnus Hastings has been photographing the world's greatest drag superstars and asking each of them a simple question: Why drag? The result is this mesmerizing volume in which the queens strut their stuff and reflect on their shared passion through a mixture of quips and philosophizing. Subjects include icons of reality TV and underground drag royalty, and photographs range from the divine to the trashy. Featuring the likes of Bianca Del Rio and Courtney Act, this collection is a beautiful celebration of drag as an art form and an exhilarating exploration of what drag means to its greatest artists.