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Caitlin Flanagan’s essays have sparked national debate. Here she turns her attention to girls, and how the biological and cultural milestones shape their budding identities. Adolescence is a transformative period that has radically changed over the generations: from how a girl learns about her period to how she expects to be treated by men, boys, and even other women. In a world where privacy and personal freedom are encroached upon daily, Flanagan examines and redefines the ultimate challenge that we face in protecting, nurturing, and defending our girls.