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They are just 3 weeks old, but twins Knox Léon and Vivienne Marcheline are about to take the world by storm.

In an exclusive interview and photos, Brad Pitt and Angelina Jolie offer PEOPLE an intimate look at their growing family.

“It is chaos, but we are managing it and having a wonderful time,” Jolie tells PEOPLE of daily life at the Château 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 (hide-and-seek is a favorite) on the château’s sprawling grounds.

Adds Pitt: “[It's] still a cuckoo’s nest.”

Fortunately, they already have some household helpers. “[Shiloh] and Z pick out [the twins'] clothes and help change and hold them,” says Jolie. “It’s sweet – they are little mommies.”

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UPDATE: Even more pics have leaked to the interwebs. Check them out here…

On the future of The Hills: “Every season, I think it’s the last. Right now, I think this is the last season.”

On whether or not the cameras get to her (and the inspiration for the cover): “I go through phases when I’ve been filming where I wake up in the middle of the night and I think I’m being filmed. That’s when I have to take a vacation.”

On accusations that the show is scripted: “I get that there are certain scenes where someone’s like, ‘Sooo, last night was weird….’ And then there are people on the show who really don’t help, because they are very fake. We know who we’re talking about —like, you need to stop rehearsing your breakfast.”