Liev Schreiber has given fiancée Naomi Watts a diamond locket to keep a picture of their new son in. Naomi gave birth to Alexander Pete Schreiber, who weighed a healthy 8lbs 4oz, at a Los Angeles hospital last Thursday.

On the same day, Liev presented the 'King Kong' star with a diamond-and-platinum heart locket he had specially designed by jeweler Neil Lane so she can carry a photo of their new arrival everywhere she goes.

A source told In Touch Weekly magazine: "It was a very special gift for her. Liev secretly helped the jeweler Neil to design it."

Alexander was born almost two weeks prematurely and friends believe Naomi may have gone into labor early because she was determined to have a natural birth.

One pal said: "Naomi's due date was early August, but since she insisted on delivering naturally she knew there was a chance she would have the baby before the due date. That's what wound up happening."

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