Defining Cool: _Vogue _s It Girls of the Year

What, exactly, defines an It Girl? Is “it” her talents, whether in film, music, or television, that captivate? Or is “it” just her bold, original style that spawns endless imitators? The answer, as you might have guessed, is both. This year’s standout women enchanted us with their romantic weddings (like **Caroline Trentini’**s marriage in Brazil), charmed us with their refreshing wit (such as Girls’ breakout director and star Lena Dunham), or just looked too good week after week to go unnoticed—we re talking about you, Jessica Paré. Here are _Vogue’_s It Girls of 2012; we can’t wait to see who will make the cut in 2013.