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Actress Majandra Delfino has become a second-time mother after welcoming a baby boy with her husband David Walton.

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The "Roswell" beauty and actor Walton, who are already parents to a daughter named Cecilia, welcomed baby Louis in Los Angeles last week, a month before his due date.

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Walton tells People.com, "Louis is as healthy as can be ... We couldn't be happier with our very early Christmas gift."

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The actors married in Miami, Florida in 2011 and welcomed 17-month-old Cecilia in June last year.