Naomi Watts, Liev Schreiber Name Newborn Baby Sam...

Naomi Watts and Liev Schreiber welcomed their second son on Saturday, said Watt's publicist, Robin Baum. Samuel Kai Schreiber weighed 7 pounds, 13 ounces.

"Both mom and baby are doing great," Baum said Monday.

The Australian actress, 40, and her 41-year-old actor-boyfriend are also parents to Alexander Pete Schreiber, born in July 2007.