Hailee Steinfeld (/ˈheɪliː ˈstaɪnfɛld/ HAY-lee STYN-feld; born December 11, 1996) is an American actress, model and singer. She is known for her portrayal of Mattie Ross in the 2010 film True Grit, for which she was nominated for the Academy Award for Best Supporting Actress, the Screen Actors Guild Award for Outstanding Performance by a Female Actor in a Supporting Role, and the BAFTA Award for Best Actress in a Leading Role. She also played Petra Arkanian in the 2013 sci-fi film Ender's Game. She portrayed Juliet Capulet in the 2013 film adaptation of William Shakespeare's romantic tragedy Romeo & Juliet, Zooey Renner in the 2014 crime film 3 Days to Kill, and Violet in Begin Again. In 2015, she played Emily Junk in the musical comedy Pitch Perfect 2.

In addition to her acting career, Steinfeld also has done modeling work. She was hired as the face of Miu Miu shortly after True Grit was released in 2011. Steinfeld debuted her singing voice in Pitch Perfect 2 and released a cover version of "Flashlight", the song she sang in the film. In 2015, she signed a recording deal with Republic Records. Her debut single "Love Myself" was released along with a music video in August 2015, which has been certified platinum. Her debut EP, Haiz, was released in November 2015.