It's the first child for Berry and Martinez and the second child for Berry, who has a 5-year-old daughter, Nahla, with ex-boyfriend Gabriel Aubrey. Berry and Martinez weremarried in July.
"Olivier hasn't left Halle's side," a source at Cedars Sinai Medical Center told People. "Nahla visited her baby brother earlier today."
Berry announced that she was expecting in April and called the pregnancy a "surprise."