Hello there, Benjamin Hunter Kaleo Travolta!

John Travolta and Kelly Preston introduce their brand-new son on the cover of Britain's HELLO! magazine, out Wednesday.

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Born in November, Benjamin joins big sister Ella Blue, 10, who loves being "Mommy's helper" to Preston, 48, the proud parents tell the mag.

Tragically, the couple's eldest child Jett died in January 2009 following a seizure.

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But Travolta, 56, tells HELLO! that their new son has helped them heal from the devastating loss. "For us it's been uplifting," the star says. "Especially when he smiles at me and seems contented in my arms. He's given the house a renewed spirit and purpose."

Back in June, Preston's mother Linda Carlson told UsMagazine.com that her daughter had been "longing for another baby...It's taken [the couple] out of such deep grief and made them able to focus on new life."

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Indeed, the couple tells HELLO! of Benjamin: "He's brought us a new beginning. He is the best gift we could possibly have."

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