The couple revealed that they were on their way to the hospital on Thursday night and in a matter of hours, they introduced their baby boy to the world.
Sharing snaps from inside the delivery room, Conor and Dee looked absolutely besotted with their latest edition.
He captioned his post: "My baby boy is born! Mammy and baby doing amazing, 8.1lbs of prime Irish double champion beef!"
The MMA fighter shared more pictures on his X, formerly Twitter, praising Dee for bringing their little boy into the world.
"Skin to skin, another chunky healthy boy into the world. Dee you are my hero," he penned.
Though their son's name is yet to be revealed, he'll be joining a very busy household.
Dee and Conor are already parents to their sons Conor Jr., six, and Rian, two, as well as their daughter Croia, four.
The MMA fighter and his fiancée first met in 2008. Though they grew up in nearby towns and had a handful of mutual friends, they didn’t officially meet until they were both at the same nightclub in Dublin, where Devlin was working at the time.
They hit it off and messaged online before making things official. After more than 10 years together, the former UFC champion proposed to the Dubliner in August of 2020, his future bride's 33rd birthday.
Along with being parents of four, McGregor and Devlin are business associates. Devlin is a member of the fighter's management and promotional teams, helping coordinate his schedule and appearances.
