A rep for the actress confirmed the detail to Access Hollywood on Monday.
As previously reported on AccessHollywood.com, the Oscar winner gave birth to her third child on December 7 at an NHS Hospital in Sussex County, UK.
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"Mother and baby are doing great," Kate's rep told Access at the time.
The baby boy is the first child for Kate and husband Ned. Kate has two children - daughter Mia, 13; and son Joe, 9; ...
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