I have a new girl hero. Her name is Tavi Gevinson. She is smart, sassy, funny and has been a better writer than me since she was 11 years old. By the time she was 13, Tavi had already cemented herself as an influential fashion commentator with her blog Style Rookie. She dressed like a funky grandmother, had the approval of Anna Wintour, front-row seats at New York Fashion Week and designers knocking on her door to collaborate on collections.