AceShowbiz - Conor McGregor is expanding his family. After he and his fiance Dee Devlin welcomed their fourth child together, the MMA fighter took to social media to introduce their "chunky healthy boy" to the world.

On Thursday, November 30, the 34-year-old shared several pictures of him and his fiancee with their new bundle of joy at the hospital. "Another chunky healthy boy into the world. Dee you are my hero," he captioned it.

McGregor announced Devlin's pregnancy when appearing on "Live with Kelly and Mark" in June. At the time, co-host Mark Consuelos asked the professional boxer about his three children, to which he replied, "I have three children; I've got two boys and a girl."

"My oldest one, Conor Jr., is 6, my daughter Croia Mairead, 4, and my youngest son Rian has just turned 2. So, things are going well," he added. "We've also got another on the way... So there's a lot going on."

The martial artist additionally shared that his oldest child started to show off his skills as a fighter. "You know, training is picking up with Junior," he said. "He's starting to get his techniques correct, he's loading the bone arrow on the backhand, he's throwing the shot."

In the meantime, McGregor only daughter has started school. "Croia, my daughter, is getting initiated into the big school now," he continued. "Back home right now, her mother, my fiance Dee, is in the big school now. So she's meeting her teachers, seeing her new class, and she's in the school uniform. That's all happening now."

Mcregggor also talked excitedly about his growing family. "So we've got the new one, the next one on the way. A couple more weeks, we'll be able to find out what the sex is of the baby," he gushed. "And we're very excited back home. A lot of great things happening. I'm very blessed. I'm very thankful. Everyday, I smile up to God and thank God."