Mackenzie Christine Foy is an American model and actress. She is known for appearing as Renesmee Cullen in the 2012 film The Twilight Saga: Breaking Dawn – Part 2, which earned her a Young Artist Award nomination as Best Supporting Young Actress in a Feature Film, and for her role as the young Murphy in the 2014 space epic Interstellar, for which she received critical acclaim, a Saturn Award for Best Performance by a Younger Actor, and several other awards nominations.