Naomi Watts and Liev Schreiber welcomed their second child, PEOPLE has learned.
"I can confirm Naomi and Liev had a baby boy yesterday," said the actress's rep.
A couple since 2005, Watts, 40, and Schreiber, 41, already have a baby boy, Alexander Pete Schreiber, born July 26, 2007.
Earlier this year, Watts boasted of her first-born, "He's turning pages in the book. He's crawling and standing up. He can wave. I read Goodnight Moon to him every night."