1. The venue
The couple will wed in Windsor Castle. The royal residence west of London dates back more than 900 years.
See also: Royals Gone Rogue: What It Means To Marry Outside The Monarch
The couple will wed in Windsor Castle. The royal residence west of London dates back more than 900 years.
See also: Royals Gone Rogue: What It Means To Marry Outside The Monarch
The ceremony will take place at midday (1100 GMT) in St George's Chapel, the final resting place of 11 monarchs including Henry VIII and Charles I, which is usually open to the public
The wedding cake is a lemon elderflower cake created by pastry chef Claire Ptak, an American based in London, which will be covered with buttercream and decorated with fresh flowers.
Floral designer Philippa Craddock will dress St George's Chapel and St George's Hall, incorporating plants from the wildflower meadows of London and foliage from Windsor Great Park. Flowers that will be featured include white garden roses, peonies and foxgloves.
See also: 10 Hong Kong Florists You Should Have On Speed Dial
The official wedding photographer is Alexi Lubomirski, who photographed the pair for their engagement. The photographer is the protégé of Mario Testino, Princess Diana’s favourite photographer, who took her last official pictures before her death in 1997.
Rather than gifts, the couple have asked for donations to seven charities instead. They are the Children's HIV Association, homeless charity Crisis, the Myna Mahila Foundation, Scotty's Little Soldiers, a charity for bereaved Armed Forces children, StreetGames, Surfers Against Sewage and The Wilderness Foundation UK.
According to Kensington Palace, the couple does not currently have any formal relationships with the chosen charities.
Britain's Queen Elizabeth II had to consent to the wedding, as under British law the monarch must approve the marriage of the six people next in line to the throne in order for them to retain their place. Harry is currently sixth in line after his father Prince Charles, elder brother Prince William and his sibling's three children.
About 600 people have been invited to attend the wedding service and the lunchtime reception at St George's Hall within Windsor Castle. Of these, around 200 guests will go on to an evening reception at Frogmore House, a royal residence south of the castle.
A further 2,640 people will be welcomed into the grounds of Windsor Castle, including charity representatives and military veterans, to watch the arrival of the bride and groom and their carriage procession following the ceremony.
Police are preparing for 100,000 people to visit Windsor for the occasion, with analysts expecting the royal wedding to boost tourism to Britain. Visitors to the town can expect to be searched by police, who will install road barriers as part of a massive security operation.
Food stalls, live screens and entertainment will be set up in Windsor, extra rail services will be laid on and 6,000 more car parking spaces opened up. Bunting and ceremonial banners will be hung around the town.
See also: Crown Jewels: A Peek Into How Royals And Celebrities Get Wed