(showbizspy.com) - Knox Leon and Vivienne Marcheline, welcome to the world.
Gracing the cover of People magazine - due to hit newsstands Monday - Hollywood super-couple Brad Pitt and Angelina Jolie show off the new additions to their brood.
Knox and Vivienne arrived by caesarean section at the Lenval hospital in Nice, France, on July 12, 2008.
And, in an interview with the magazine, the couple offer an intimate look at their growing family.
"It is chaos, but we are managing it and having a wonderful time," 'Tomb Raider' star Jolie says of daily life at the Chateau Miraval in Provence, France, where the couple's four older children - Maddox, 6, Pax, 4, Zahara, 3, and Shiloh, 2 - have been enjoying a summer of outdoor play on the chateau's sprawling grounds.
Adds Pitt, "[It's] still a cuckoo's nest."
"[ Shiloh] and Z pick out [the twins'] clothes and help change and hold them," says Jolie. "It's sweet - they are little mommies."
The mag, which includes "19 pages of intimate family photos and the full interview with Brad and Angelina," hits newsstands Monday.