Foy's acting career began when she was nine years old, when she guest-starred in television shows such as 'Til Death, FlashForward and Hawaii Five-0. In 2010, she was cast as Renesmee Cullen in the film adaptation of Stephenie Meyer's book Breaking Dawn, the fourth and final novel in the Twilight saga series. The first movie, The Twilight Saga: Breaking Dawn – Part 1, in which Renesmee is shown only in a flash forward, was released on November 18, 2011, while the second, The Twilight Saga: Breaking Dawn – Part 2, on November 16, 2012.