December 14, 2008 01:30 PM

Hector Vallenilla/Pacific Coast News

It’s a second son for Liev Schreiber and fiancée Naomi Watts! Samuel Kai Schreiber arrived on Saturday, December 13th in New York City, weighing in at 7 lbs., 13 oz. He joins big brother Alexander ‘Sasha’ Pete, 16 ½ months. "Both mom and baby are doing great," Naomi’s rep shares.

News of the pregnancy started making the rounds in July, but the couple wouldn’t confirm or deny the news, even as they traveled the globe! Finally, on December 5th, Liev, 41, broke his silence, stating that he and Naomi, 40, expected their new arrival soon, as "our first baby came early and I suspect this one will as well. Life gets a lot busier — it also gets a lot more enjoyable in many aspects."

Want a closer look at the family? Check out two of our galleries — Family Album: The Watts-Schreibers and Naomi’s Baby Bump Style!

Source: PEOPLE 

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