After the castle visit, the couple will move on to the New Town to visit Social Bite, a social enterprise cafe which distributes food and hot drinks to homeless people across Scotland each year, as well as employing staff who have experienced homelessness themselves.
Prince Harry and Meghan Markle headed to Scotland on Tuesday for their first official joint visit to the country. Well, yes, the meltynautes, Meghan Markle and prince Harry seem to move widely in the preparations of their marriage.
But when it comes to the nuptials between Meghan Markle and Prince Harry, taking place on the 19th May, you better believe they're going to select a class act with a touch of cool. The couple shook hands, said hello, and greeted the the Royal Regiment of Scotland and their little mascot, a Shetland pony named Cruachan IV.
Crowds have been gathering outside Edinburgh Castle since this morning in anticipation of the royal visit.
Since her engagement to Prince Harry she's continued to own her more laid back, relaxed fashion style.
Meghan Markle is breaking boundaries with her royal dressing. "She said she was freezing", said student Maya Moss, 22, who met the former Suits star during the couple's walkabout.
Among those in the crowd was Scottish baker Carolyn Chisholm who gave the bride-to-be some heart-shaped potato scones ahead of Valentine's Day.
They were treated to the firing of One o'Clock Gun as temperatures in the picturesque town plummeted.
The former "Suits" actress expertly paired the almost $3,000 double-breasted cashmere-blend coat from the British brand with black Adley trousers from Veronica Beard's resort '18 collection.
They then moved to Social Bite, a network of cafes set up to help the homeless which has previously welcomed George Clooney, Leonardo DiCaprio and the Duchess of Cornwall. One of the people on the invite list, reports say, is the Grammy-winning musician known for his lovely melodies and heartfelt lyrics.
"Hey!" the prince said at one point, narrowly avoiding a bite.
The final part of the day was a visit to the Palace of Holyroodhouse where the pair celebrated youth as part of Scotland's Year of Young People 2018 initiative.