LIKE FATHER, LIKE SON
Conor McGregor Jr. is already learning the ropes of being super famous ... joining his papa for an incredibly adorable poster signing sesh ahead of UFC 257!!!
3-year-old Conor Jr. has pretty much been following in his MMA superstar dad's footsteps since birth -- from joining him in the gym to wearing stylish designer outfits together.
Conor decided to bring his mini-me along to sign some promo posters ahead of his huge Fight Island bout with Dustin Poirier .