The little one arrived a few days ago - as confirmed by proud grandad Tony McGregor.
And now Ireland's UFC champion Conor McGregor has shared the news in person, posting a snap of his baby son Conor Jr. shortly after the birth.
"Dee and Junior are doing great everyone!" the MMA star wrote.
"Thank you for all the kind words, I am one proud and blessed Daddy."
https://www.instagram.com/p/BTyarCbgQ62/?taken-by=thenotoriousmma&hl=en
Little McGregor Jnr can be seen in the photo snuggled into his mam, his big blue eyes open and taking in his surroundings.
Future UFC Champion, anyone?
