'Jennifer Garner and Ben Affleck gave birth to a healthy baby girl,' the actress's rep said.
The baby was born Tuesday, January 6, in Los Angeles, reports PEOPLE.
Both 36, Garner and Affleck are also parents to daughter Violet, three.
Just a few days before the big news, Garner was spotted with Violet at the Farmer's Market in Pacific Palisades and grabbing a decaf coffee at Caffe Luxxe in Santa Monica with a girlfriend.
Victor Garber, the ex-Alias costar and close friend, said that the actress needs no help in the mommy department. 'It's her second child,' Garber said, adding, 'She knows what to do. She's probably the best mother I've ever witnessed.'
Garner confirmed her second pregnancy in August.
Text: ANI | Photograph: REUTERS/Brian Snyder