Angelina Jolie and Brad Pitt welcomed Knox Jolie-Pitt and his twin sister Vivienne in July 2008. Here's everything to know about Angelina Jolie and Brad Pitt's youngest son, Knox Jolie-Pitt.

Angelina Jolie recently made a stunning appearance on the red carpet of the Governors Ball with her rarely seen son Knox, who many feel is the spitting image of his father, Brad Pitt, when he was younger.

Pitt is Angelina Jolie and Brad Pitt's youngest son and one of their six children. He has a twin sister, Vivienne, and four other siblings, Maddox, Pax, Zahara, and Shiloh. Knox Jolie-Pitt recently made an unexpected red-carpet appearance,