See Adorable Photos of Knox & Viv Jolie-Pitt!

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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.

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Knox & Vivienne's 1st Birthday!

"Brad and I do manage to make special time for each child," Jolie told the British tabloid Hello!, which paid $14 million for shared rights to the first photos of the twins, last August. "With six kids it takes up the majority of the day."

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Knox & Vivienne's 1st Birthday!

Jolie -- who finally confirmed that she was expecting twins at the 2008 Cannes Film Festival -- once said that she wanted to create a blended family. "[Including] children of different religions and cultures, from different countries," she told U.K.'s Daily Mail in 2004. "Actually, I'd love to have seven, a small football team."

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Knox & Vivienne's 1st Birthday!

"Usually people fall in love and everything revolves around the ritual of marriage, children are an afterthought. We did everything backwards," Jolie told the Italian edition of Vanity Fair in October 2008. "But sooner or later it will be the kids who ask us to get married. You know, they see films and start asking questions. Such as, 'Why are Shrek and his love Fiona married and you're not?'"

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Knox & Vivienne's 1st Birthday!

"Some of my kids are from countries that have seen conflict," Jolie told CNN's Anderson Cooper in June 2009 of adopted kids Zahara (from Ethiopia), Maddox (from Cambodia) and Pax (from Vietnam). "I usually just explain to them that there are other families in the world that aren't as fortunate as ours...so I tell them that it's important for all of us to do what we can and then go to these places and understand what's happening."

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Knox & Vivienne's 1st Birthday!

"It's a lot of fun now 'cause the older kids are old enough to help plan the birthdays for the younger kids," Jolie told Anderson Cooper in June 2009. "So it's one of the great pleasures of life, the birthdays."

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Knox & Vivienne's 1st Birthday!

Just two days before their arrival in Japan, mom and dad were hitting the red carpet at the Screen Actors Guild Awards. "Our kids are always packing," Jolie told Entertainment Tonight at the time. "They like to pack; it's a game in our house.

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Knox & Vivienne's 1st Birthday!

Pitt told Oprah Winfrey in November 2008 his kids are "the funniest people I've ever met. And you know, it really tells you -- it's a great mirror for yourself. It really tells you a lot about yourself and who you are and how you react to things. They make me better. They make me a better person as a father."

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Knox & Vivienne's 1st Birthday!

"Of course we get tired, but we made a decision to have a big family and support each other to make it work," Jolie told Hello! in 2008.

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Knox & Vivienne's 1st Birthday!

Like father, like son! Both Pitt and Knox wore gray jumpers and tweed flap caps as they made their way through the Tokyo airport.

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Knox & Vivienne's 1st Birthday!

Carried by her mom, Angelina, blue-eyed Vivienne looked identical to big sis Shiloh, who was born in May 2006.

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Knox & Vivienne's 1st Birthday!

"We've grown to love the chaos of six kids and the fact that you can never stop being mommy and daddy," Jolie told Britain's OK! magazine in June 2009. "Even if we lock our door the children come knocking!"

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Knox & Vivienne's 1st Birthday!

"One seemed simple, and it's just double the fun. It's surprising how soon their personalities have started emerging," Pitt told London's Daily Telegraph of his twins in January 2009. "But it's really important that everyone gets their individual time as well as group time together."

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Knox & Vivienne's 1st Birthday!

"I'm so lucky, and I don't want to miss school lunches and things like that," Jolie told Nightline in early 2009. "The greatest thing about being an actor is I can play post office really, really well with the children. And restaurant, I'm great at," she joked.