08/23/2011 at 10:00 AM EDT
and Ben Affleck
are getting ready for another baby!
The couple, who are parents to two daughters – Violet,
5½, and Seraphina,
2½ – are "thrilled" to be expecting their third child, they confirm to the Associated Press
Garner and Affleck, both 39, have each spoken of being hands-on parents. After Seraphina's arrival, Garner said juggling acting and motherhood gave her a "split personality.
"[I] feel like half my brain is somewhere else all the time, but when the camera's rolling, I pull it together and focus for two minutes," she said at the time, "and then I kind of turn back to a ditz again."