Jennifer Garner and Ben Affleck leaving Cedars-Sinai Medical Center, Los Angeles, California - 04.01.09

Details surrounding the birth are not yet known, but a representative for the Hollywood couple insists mother and child are doing well.

The spokesperson tells People.com, "Jennifer Garner and Ben Affleck gave birth to a healthy baby girl."

The pair is already parents to three-year-old Violet.

After the pregnancy was announced in August (08), Affleck made it known he wouldn't chose an unorthodox name for his second child, preferring traditional names over "trendy" Hollywood ones.

Source: WENN