Congratulations are in order for Biggest Loser champ Olivia Ward — she's just become a first-time mom!

The 39-year-old and her husband Ben Ward welcomed a baby boy named Harper Ellis Ward on Friday August 14 and quickly shared their news with Instagram.

Posting a sweet photo of herself giving her new son a cuddle, Olivia wrote, "It is with overwhelming joy @benwardmusic and I would like to introduce our son Harper Ellis Ward. Born 8-14-15 weighing 8 lbs 6 oz. We couldn't be more grateful to God for this amazing gift!"

Olivia, who won season 11 of the NBC weight loss show after dropping an incredible 129 pounds, announced that she was expecting back in February after a struggle with fertility issues, telling Us Weekly: “My husband Ben and I are so thrilled to be expecting."

Since her big win, Olivia has become an instructor for Soul Cycle in New York.