The loved-up pair, who met in 2012, were previously on-screen lovers as Jon Snow and Ygritte - and formed a romantic relationship away from the popular HBO show.
Fans of the show gathered outside 900-year-old Wardhill Castle in northeast Scotland, where the two British actors are due to Wednesday Saturday. All your favorite Game of Thrones stars were in attendance, including Peter Dinklage, Emilia Clarke, Sophie Turner, and Maisie Williams.
Harington, wearing a morning suit, arrived earlier on Saturday afternoon.
Rose, 31, was a vision as she headed into the chapel on the arm of her father clad in a billowing white gown with a lace bodice and intricately beaded veil that she secured upon her tousled auburn hair.
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Red Bull's Max Verstappen qualified fourth with Australian team mate Daniel Ricciardo fifth and Ferrari's Kimi Raikkonen sixth. I trust the team, and if we have to use the older-specification engine, I am not anxious ".
He added: "It's an absolutely lovely day for us".
The radiant redhead also donned a cream floral headband using the same array of flowers that made up her miniature bouquet.
Actor Peter Dinklage, who plays character Tyrion Lannister, blew a kiss at the crowd as he walked into the churchyard.
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And the June 23 date was posted at the Huntly registration office in Aberdeenshire, in the north east of Scotland, last month.
The couple, both 31, who starred together in the TV blockbuster for four seasons, confirmed their engagement back in September previous year.
As expected, Harington and Leslie also welcomed their Game of Thrones castmates to the event.
The Game of Thrones cast and crew are now shooting the show's eighth and final season that will air next year, but Harington was adamant about making sure his co-stars could witness his nuptials. "The engagement is announced between Kit, younger son of David and Deborah Harington of Worcestershire, and Rose, middle daughter of Sebastian and Candy Leslie of Aberdeenshire", the simple announcement read.
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Any joint statement is unlikely to include economic cooperation with the North, Im said. "I wouldn't expect that at this point". Chinese President Xi Jinping has coached his North Korean counterpart Kim Jong Un on high-stakes diplomacy.
"If you're already attracted to someone, and then they play your love interest in the show, it becomes very easy to fall in love".