Mackenzie Christine Foy (born November 10, 2000) is an American actress. She is best known 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; as the young Murphy in the 2014 space epic Interstellar, for which she received a Saturn Award for Best Performance by a Younger Actor among other awards nominations; and as Clara in Disney's The Nutcracker and the Four Realms.
Foy was born on November 10, 2000. She was born and raised in Los Angeles. Her father, a truck driver, and mother, a homemaker, had no connections to the film industry. Foy began modeling at age 3, and started acting at age 9.
Foy began modeling in print ads in 2004, working for Garnet Hill, Polo Ralph Lauren and Guess. From there, she modeled for companies such as The Walt Disney Company, Mattel and Gap.