how old is haley seinfeld
About. 1  Hailee Steinfeld is a 20 year old American Actress. Born on 11th December, 1996 in Los Angeles, California, USA, she is famous for Mattie Ross in 'True Gift', Emily Junk in 'Pitch Perfect 2' in a career that spans 2014âpresent. Her zodiac sign is Sagittarius.