Jennifer Garner and Ben Affleck

Jennifer Garner and Ben Affleck are expecting their third child, they confirmed to The Associated Press.

The couple is "thrilled" about the upcoming addition, who will join big sisters Violet, 5, and Seraphina, 2.

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Garner and Affleck, both 39, have been married for six years.

She is currently filming the Disney movie The Odd Life of Timothy Green, while Affleck is preparing to direct his third feature, Argo, about the 1979 Tehran hostage crisis.