According to proud mama Naomi Watts, it’s Samuel.
The King Kong thesp, 40, and Liv Schrieber, 41, said Halloo to boy number two in New York over the weekend.
Samuel Kai Schreiber was a lusty seven pounds and 13 ounces at birth, announcing his name yesterday.
Sammy Kai joins bi-coastal big brother Alexander who was born in LA in 2007.
Naomi can next be seen in thriller The International opening in February while Liv pumps up to battle Hugh Jackman in summer blockbuster Wolverine: Origins.