Dustin Johnson and Paulina Gretzky Welcome Son Tatum

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Paulina Gretzky and her pro golfer fiancé Dustin Johnson are new parents.

The bikini model and aspiring actress, 26, the daughter of hockey great Wayne Gretzky, gave birth to their first child, son Tatum, on Monday, Jan. 19, the couple confirm to PEOPLE.

“Paulina and I are happy to announce the arrival of our baby boy, who was born in Los Angeles on Monday morning,” Johnson, 30, says in a statement.

“Both Paulina and the baby are healthy, resting comfortably and in great spirits.”

More specifics about their new little one are forthcoming, Johnson adds. “We sincerely appreciate the outpouring of love and support we have received and plan to release further details in the coming days!”

The couple — who were engaged in August 2013 — announced the pregnancy in September. While wishing her followers a happy holiday in December, Gretzky revealed the sex of her baby on the way.

“Merry Christmas everyone!! Ps … we’re having a BOY,” she captioned a family photo on Instagram.

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— Andrea Billups with reporting by Sarah Michaud