The wedding will take place in St George's Chapel, palace officials said in a statement, adding that the royal family will foot the bill.
Palace officials also said that Markle will be baptized in the Church of England prior to the wedding. She will also start the process of becoming a British citizen prior to the marriage — a process that involves her applying for a spousal visa and could take several years.
Still, many questions remain: What specific day in May will they wed? What title will Markle take after the marriage? Who will be on the guest list? Will there be a sea of dazzling hats in the audience?
We are told that more details will follow in the weeks and months ahead.
Many royal watchers said that St George’s Chapel in Windsor — a charming city about 20 miles west of London — was the most likely venue for the wedding. The chapel is contained inside the walls of Windsor Castle, and has been the setting for other royal weddings, including Harry’s cousin Peter Phillips, who married Autumn Kelly, a Canadian, in 2008.
When Harry’s father, Prince Charles, married Camilla Parker Bowles in 2005, they held a civil ceremony in Windsor but afterward had a service of blessing at the chapel.
Harry's spokesman told reporters at a briefing in London on Tuesday that Windsor was a "special place for them.” It’s also where Harry was baptized.
In the meantime, palace officials said that the couple will “undertake their first official engagement” together in Nottingham on Friday where they will mark World AIDS Day by meeting organizations supporting people living with HIV/AIDS.
“Prince Harry is looking forward to introducing Ms. Markle to a community that has become very special to him,” Kensington Palace tweeted.
It will be Markle’s first outing in her new role. During an interview broadcast Monday on BBC, Markle was asked about giving up her acting career. She recently wrapped up filming in the legal drama "Suits.”
“I don’t see it as giving anything up,” she said. “I just see it as a change, it’s a new chapter.”