The Royal Family will pay for the wedding, including the service, music, flowers and reception - the date will be announced later.
Ms Markle, 36, a Protestant, will be baptised into the Church of England and confirmed before the wedding.
A spokesman for the prince said the pair would make sure the wedding "reflects who they are as a couple".
Jason Knauf said Prince Harry, 33, and Ms Markle were "leading the planning process for all aspects of the wedding" and were working through ideas on how members of the public could "feel part of the celebrations".
"This wedding, like all weddings, will be a moment of fun and joy that will reflect the characters of the bride and groom," he added. read more
The U.S. military has ordered its troops stationed in Japan to remain on their bases and to forgo drinking alcohol in response to a deadly crash reportedly caused by a drunk-driving Marine. Okinawa resident Hidemasa Taira, 61, was killed Sunday in the prefectural capital of Naha when his minitruck was struck by a military vehicle driven by Marine Nicholas James-McLean, 21, whose blood alcohol content was found to be more than three times the legal limit. Taira reportedly survived the initial crash, but later succumbed to his injuries in a hospital, leading to an even harsher backlash against U.S. forces, whose presence in the country has already come under criticism from disgruntled locals. read more