Vivienne and Knox Jolie-Pitt were born in Nice, France on July 12, 2008. Knox Leon weighed 5.3 lbs and Vivienne Marcheline weighed 5 lbs. She had a cesarean birth, her second. Angelia Jolie had reportedly been due August 19, 2008, making her 35 weeks when the twins were born.
Vivienne and Knox have many siblings including Pax, Shiloh (5/27/06), Zarah and Maddox.