06/16/2010 05:12 am ET Updated May 25, 2011

Brad Pitt's Parents Step Out With Maddox, Pax, Zahara & Shiloh (PHOTO)

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With mom Angelina Jolie busy shooting The Tourist, her children have been enjoying some quality time with their grandparents. Earlier in the week, William and Jane Pitt were spotted with their littlest grandchild, Knox, 1

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