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There's no doubt that today's royal occasion will be regarded as one of the biggest weddings of the year.
With that in mind, a number of high-profile friends of Prince Harry and Meghan Markle attended the extravagant event.
Celebrities such as Idris Elba, Oprah and James Blunt have been spotted, while friends such as tennis star Serena Williams have been sharing their preparations for the function with their social media followers.
Here are all of the guests attending the wedding at St George's Chapel:
All the guests who attended Prince Harry and Meghan Markle’s weddingShow all 23 1 /23All the guests who attended Prince Harry and Meghan Markle’s wedding All the guests who attended Prince Harry and Meghan Markle’s wedding Patrick J. Adams and wife Troian Bellisario arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Gina Torres arrives at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Former Prime Minister John Major and wife Norma the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle
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All the guests who attended Prince Harry and Meghan Markle’s wedding Gabriel Macht and wife Jacinda Barrett arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Dr. Noel Fitzpatrick arrives at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry in Windsor, Britain
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All the guests who attended Prince Harry and Meghan Markle’s wedding Serena Williams and Alexis Ohanian attend the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle
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All the guests who attended Prince Harry and Meghan Markle’s wedding Julia Carey and James Corden attend the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle
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All the guests who attended Prince Harry and Meghan Markle’s wedding Former England footballer David Beckham (R) arrives with his wife Victoria for the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle at St George's Chapel, Windsor Castle
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All the guests who attended Prince Harry and Meghan Markle’s wedding Jonny Wilkinson and Shelley Jenkins arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry
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All the guests who attended Prince Harry and Meghan Markle’s wedding Charlotte Riley and Tom Hardy arrive at the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle
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All the guests who attended Prince Harry and Meghan Markle’s wedding Amal Clooney and George Clooney arrive at the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle
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All the guests who attended Prince Harry and Meghan Markle’s wedding Actress Cressida Bonas (L) arrives at the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle
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All the guests who attended Prince Harry and Meghan Markle’s wedding British parasport athlete David Henson, MBE and wife Hayley Henson arrives at the wedding of Prince Harry to Ms Meghan Markle
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All the guests who attended Prince Harry and Meghan Markle’s wedding Marcus Mumford and Carey Mulligan arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Oprah Winfrey arrives in St George's Chapel at Windsor Castle for the wedding of Prince Harry and Meghan Markle.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Idris Elba and Sabrina Dhowre arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Argentine photographer and model Delfina Blaquier poses on arrival for the wedding ceremony of Britain's Prince Harry and US actress Meghan Markle at St George's Chapel, Windsor Castle, in Windsor.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Sir Keith Mills and his wife Maureen Mills arrive at the wedding of Prince Harry to Ms Meghan Markle at St George's Chapel, Windsor Castle.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Charles Spencer (centre) arrives at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Prince's Harry's friend, British singer James Blunt (C) arrives for the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle at St George's Chapel, Windsor Castle, in Windsor.
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All the guests who attended Prince Harry and Meghan Markle’s wedding James Haskell and Chloe Madeley arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Sir Clive Woodward and Jayne Williams arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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All the guests who attended Prince Harry and Meghan Markle’s wedding Lady Edwina Louise Grosvenor (left) and Dan Snow arrive at St George's Chapel at Windsor Castle for the wedding of Meghan Markle and Prince Harry.
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Following the wedding ceremony, Prince Harry and Markle's guests will make their way to the first reception at St George's Hall, before then heading to the second reception which is being hosted by the Prince of Wales at Frogmore House.
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