Prince William and Princess Catherine leave Westminster Abbey in a carriage following their wedding ceremony in London on April 29, 2011.

Prince William's Royal Wedding To Kate Middleton

The Royal Wedding between Prince William and Kate Middleton was watched by people all over the world and is a cherished memory in Britain's history. Not many know that Prince William broke tradition by adding a small personal touch to the ceremony.

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Leading up to the big day, Prince William made the bold choice to name his younger brother Prince Harry "Best Man." It may seem simple to most people but for Royal Weddings, the Groomsmen are supposed to be labeled "supporters."

Prince William and his best man Prince Harry arrive for the royal wedding between Prince William and Kate Middleton at Westminster Abbey in London on April 29, 2011.

Tradition Breaking In The Royal Family

His father Prince Charles stuck to the rules and named his younger brothers Prince Andrew and Prince Edward his "supporters" in his wedding to Diana, Princess of Wales. Prince William's uncle Prince Edward did the same in his own wedding, naming his brothers as "supporters."

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Prince William stuck to his guns and chose to publicly refer to Prince Harry as his "Best Man." The Times reported that Prince William felt the title "had more relevance to his life than the alternative." Prince Harry returned the favor when he married Meghan Markle, easily naming his brother "Best Man" and joking that he got down on one knee to ask him.

It was a sweet personal touch to the ceremony, breaking away from formal traditions.

Prince Harry and his brother and best man Prince William, Duke of Cambridge arrive for the royal wedding ceremony of Prince Harry and Meghan Markle in Windsor, England, on May 19, 2018.