See Adorable Photos of Knox & Viv Jolie-Pitt!
Credit: WireImage.com
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Knox & Vivienne's 1st Birthday!
Twins Knox Leon and Vivienne Marcheline -- named in honor of Pitt's grandfather and Jolie's mother -- were delivered via Caesarean section at a hospital in the south of France. They joined older siblings Maddox, 7, Pax, 5, Zahara, 4 and Shiloh, 3.