Seventeen Magazine, the #1 teen publication releases it’s first-ever power issue recognizing today’s most powerful girls 21 & under. The issue, which hits stands February 4th features cover girl, Selena Gomez, who gets the prize at #1, models Karlie Kloss, Kate Upton and Cara Delevinge (who I can not believe are all only 21!!!) as well as Lorde, Miley Cyrus and a whole slew of others (complete list below).