The couple were pictured holding hands outside the Olympia Theatre on Dame Street
Taking to Instagram, the Olympic boxer shared a picture of the couple holding hands on their wedding day, as they stood outside the Olympia Theatre on Dame Street.
Amanda, known as Mandy is wearing a slim fit white dress with a long sleeve lace top and ruched skirt.
Meanwhile, Kellie is wearing a gorgeous pair of white suit trousers with a lace top that has a gorgeous long train down the back.
The pair are also holding matching colourful bouquets.
“8-4-22” she captioned the picture, referring to the date of their wedding.
Their wedding reception was held at The Old Spot where the newly weds were joined by friends and family as well as their adorable dogs.
Taking to Twitter on Monday, Kellie shared a picture of their pups.
The happy couple beamed as they posed with their three dogs – including French bulldog Nidge and Staffordshire bull terrier Macy.
“In a world where ye can be anything, just be yourself,” the 32-year-old wrote as she added the date of their wedding.
The first photo of the day came from pal Faye O'Rourke, front woman of Soda Blonde, who shared a snap of the couple cutting their wedding cake which was decorated with roses and a cake topper reading 'Amanda and Kellie'.
The musician also shared videos of the pair dancing together with family and friends to 80s smash hit Smalltown Boys by Bronski Beat.
O'Rourke described the occasion as 'the most beautiful wedding of all time' in her Instagram post.
Harrington recently revealed that she is set to retire at 34 to settle down with her wife, saying professional boxing is “not for her.”
Appearing on the Dermot and Dave show on Today FM, the newlywed said she was not considering competing at a higher level.
“I want to have a bit of a life. I’m going to finish up when I’m 34 and that will be me done and dusted.”
“I'll go up to my club and I'll still train,” she continued.
“It’s not me walking away from the sport, I’ll still be training because I need to do that, I think it's great for your mental health.”
“But I’ll still tip away… only so I can eat more cakes and takeaways,” she joked.
“Professional boxing is not for me it's a business and I want to settle down proper after Paris (Summer Olympics 2024), if I get there and if I don't get to Paris I’ll settle down even sooner,” the 32-year-old said.
Kellie and Mandy have been together since 2009 after meeting at a boxing club in Bray 13 years ago.