September 16, 2011 11:00 AM

Seth Browarnik/Startraks

Nothing could top Donatella Arpaia‘s 40th birthday present.

The celebrity chef and her husband Dr. Allan Stewart welcomed a son on her special day, Thursday, Sept. 15, her rep confirms to PEOPLE.

Baby boy — whose name has not been released — was born at New York City’s Columbia Presbyterian and weighed 8 lbs., 3 oz.

And while the Iron Chef America and The Next Iron Chef judge and her son now share the same birthday, there is even more to celebrate: the date also marks the one-year anniversary of the opening of Arpaia’s restaurant, Donatella.

— Anya Leon

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