Hailee Steinfeld - KIIS FM's Jingle Ball 2014 Portraits on December 5, 2014

Hailee Steinfeld (born December 11, 1996) is an American actress. She rose to fame for her portrayal of Mattie Ross in the 2010 film True Grit, for which she was nominated for an Academy Award for Best Supporting Actress and a BAFTA Award for Best Actress in a Leading Role.