The Young and the Restless star welcomed daughter Natalia Scout Lee Stafford on Monday at 11:23 p.m., her rep confirms exclusively to PEOPLE.
The baby – born via surrogate – weighed 8 lbs., 3 oz. and measured 19 inches in length. "She is healthy, gorgeous, and amazing – Michelle is out of her mind happy," the rep says in a statement.
After announcing in September that her decision to turn to a surrogate had been successful and that she was, indeed, expecting her first child, Stafford celebrated the impending arrival with a whimsical baby shower late last month alongside her closest friends.