20. Britain's Prince William and wife Kate, Duchess of Cambridge wave as they travel in the 1902 State Landau carriage along the Processional Route to Buckingham Palace, in London on April 29, 2011.
2. The most famous royal wedding, Princess Diana and Prince Charles wed in 1981.
PHOTOS: Royal Weddings Through The Years
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 The most famous royal wedding, Princess Diana and Prince Charles wed in 1981. Photo: WENN
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PHOTOS: Royal Weddings Through The Years
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 The most famous royal wedding, Princess Diana and Prince Charles wed in 1981. Photo: Getty
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PHOTOS: Royal Weddings Through The Years
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 The most famous royal wedding, Princess Diana and Prince Charles wed in 1981. Photo: Getty
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PHOTOS: Royal Weddings Through The Years
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 The most famous royal wedding, Princess Diana and Prince Charles wed in 1981. Photo: Getty
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PHOTOS: Royal Weddings Through The Years
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 The most famous royal wedding, Princess Diana and Prince Charles wed in 1981. Photo: Getty
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PHOTOS: Royal Weddings Through The Years
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 The most famous royal wedding, Princess Diana and Prince Charles wed in 1981. Photo: Getty
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PHOTOS: Royal Weddings Through The Years
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 The most famous royal wedding, Princess Diana and Prince Charles wed in 1981. Photo: Getty
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PHOTOS: Royal Weddings Through The Years
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 Prince Philippe and Mathilde d’Udekem d’Acoz wed in Belgium in 1999. Photo: WENN
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PHOTOS: Royal Weddings Through The Years
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 Peter Phillips, the eldest grandson of Queen Elizabeth II and Canadian Autumn Kelly leave St. George’s Chapel in Windsor, England, after their marriage ceremony. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 The Prince of Wales and The Duchess of Cornwall leave. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 The most famous of all royal weddings: Princess Diana and Prince Charles married in 1981. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 Prince Edward and Sophie Rhys-Jones wave to the crowd following their wedding in St Georges Chapel, Windsor Castle. Buckingham Palace announced before the wedding that the couple will in the future be known as the Earl and Countess of Wessex. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 The Duke and Duchess of York (formerly Prince Andrew and Miss Sarah Ferguson) smile happily during their carriage procession after their wedding at Westminister Abbey in London in 1986. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 Lady Sarah Armstrong Jones, daughter of Princess Margaret, and her new husband, actor Daniel Chatto, leaving St Stephen Walbrook Church in London after their wedding ceremony. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 Lady Helen Windsor and her husband , Tim Taylor, on the steps of St George’s Chapel in Windsor Castle, after their wedding ceremony. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 Princess Anne and Captain Mark Phillips leaving the west door of Westminster Abbey in London after their wedding ceremony. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 Princess Margaret’s wedding in 1960. No expense was spared on the lavish reception for hundreds of guests attending the wedding between the Princess and Antony Armstrong-Jones, later Lord Snowdon, on May 6, 1960. Photo: PA
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PHOTOS: Royal Weddings Through The Years
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 Princess Alexandra and her Bridegroom Angus Ogilvy post with members of their family during the reception at St. James’s Palace in London after their wedding ceremony at Westminster Abbey in the 1960′s. Photo: PA
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