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Hollywood's Secret Adoptions

Unbeknownst to the world, Charlize Theron went through an arduous adoption process that reportedly completed on March 15. Even tougher than the actual act of adopting may have been keeping the task under wraps. In an interview with ET over the weekend, the actress credited her "good friends" for keeping a lid on the baby news. Click through to see a few more stars that run with a trustworthy circle who can clearly keep a secret.