The child is Garner's second with her film star husband Ben Affleck.

The couple, who appeared together in the movies "Pearl Harbor" and "Daredevil," married in 2005 and are the parents of 3-year-old Violet.

Garner starred in the TV series "Alias" and in the films "13 Going on 30," "Catch and Release," "The Kingdom" and "Juno."

Affleck co-wrote and starred in "Good Will Hunting" and has acted in the films "Chasing Amy," "Dogma," "Bounce," "Jersey Girl" and "The Sum of All Fears." He also directed the movie "Gone Baby Gone."