Life & Style has learned Cameron Diaz and Benji Madden, who will have been married three years on Jan. 5, have turned to adoption to make their dreams of having a child come true.

Cameron, 45, and Benji, 38, “have decided to try adoption and have started the process,” the source exclusively reveals. “They want to adopt from within the U.S. and are counting the days. Cameron is very hopeful. Though they are so fulfilled in every way, they feel this would complete their family."

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“Cameron feels like the timing is right,” the source continues. “She’s been asking friends about adoption and reading parenting books. It’s taking time and they have been so patient, but they are both bursting with excitement.”

They have the same vision for their growing family. “Cameron and Benji would love a newborn and have both agreed they want a boy, but they of course will be happy with any healthy baby,” the insider adds.

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