'Tis a far cry from shaved heads and red zippys McGregor has come - but it seems that the Crumlin native's roots are hard forgotten, as this photo of the young star was published to Twitter just yesterday.
The photo, taken five years ago, was posted by fellow MMA fighter Tommy 'Titanium' Gunn.
— Tommy Martin (@TommyGunnMMA) July 14, 2017
McGregor's only a pup, sure.
And, is that a...smile?
Well, what do you know...
Thanks to Tommy for the pic!