Cameron Diaz, Gwyneth Paltrow, Ben Affleck and more! See the seemingly ageless A-listers celebrating 40th birthdays this year
The adorable former Charmed and Who's the Boss star became a mom in August 2011, welcoming son Milo Thomas with hubby David Bugliari. "My heart has tripled in size [since giving birth]," she tweeted that fall about her new bundle of joy.
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