3. Cara Delevingne
Who: Cara Delevingne
What: English socialite, supermodel + actress
Why she's an 'It' girl: Cara has redefined what it means to be a supermodel - her rebellious, sassy attitude sets her apart from the rest and her eyebrows are arguably what made her a mega-star. She has since taken her talents to the big screen, starring in Anna Karenina, Paper Towns, and Suicide Squad.