“Incredibly excited to announce the arrival,” he wrote alongside a photo of Storm cradling their newborn son. “We’re all bursting with love for the newest little member of our family.
“Feeling very blessed to be daddy to this little man and the luckiest man in the world to be husband to such a strong, loving and warm-hearted woman and add to my beautiful family #KeatingClan.”
This is Storm’s first child, but Keating already has three children - Jack, 17, Missy, 15 and Ali, 11, - from his first marriage to Yvonne Connolly.
The couple announced they were expecting their first child together in December 2016.
Storm revealed the baby news on her blog, writing: “On 17 August in 2010, my husband and I became friends. On the same day five years later we became husband and wife.
“We’re now very excited to announce that a year later (and again to the exact date) we became parents-to-be.”
Congrats to the couple!