The UFC star shared a video and some snaps of his little girl smiling as she rode along in a pink, plastic horse-drawn carriage with her dad at her side.
Captioning the post, he wrote: “Happy 3rd birthday my beautiful princess Croía Mairéad McGregor I love you with all my heart and soul my daughter, here is your horse and carriage because you are royalty baby girl don’t ever forget it.”
On Sunday, the Crumlin native posted some more photos of the Croía as she celebrated her birthday with family and friends at a unicorn-themed party.
The birthday girl seemed to have a ball and was photographed wearing face paint and a colourful tutu at the event.
The McGregors made sure that Croía had a magical day by hiring some ballet dancers and a horse made up to look like a unicorn.
After the party, Conor wrote: “Daddy loves you, thank you lord, from unicorn land my daughter Croía is three”
His sister Aoife commented on the post and gushed over her niece, saying: “The most beautiful girl in the world️. Happy 3rd birthday my Croía”
He also posted a series of photos with his mother Margaret and his sisters Aoife and Erin at the party.
Meanwhile, McGregor’s long-term partner Dee also wished her daughter a happy birthday over on her own Instagram account.
The 34-year-old shared some more photos from Croía’s birthday bash, including a snap of an extravagant balloon arch, a tiger slide, and a picture of her and Conor enjoying some candy floss together.
“Happy 3rd Birthday to our shining star!! We love you baby girl,” the proud mum wrote.
Conor and Dee are also proud parents to Conor Jr (5) and 8-month-old Rian, who was born last summer shortly before the Dubliner’s defeat against Dustin Poirier during their trilogy fight at UFC 264.