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Prince Harry and Meghan Markle leave via the West Door of St. George's Chapel after exchanging vows on May 19. Photo by Ben Birchall/Pool via Reuters

PHOTOS: Hollywood meets history at Prince Harry and Meghan Markle’s royal wedding

Britain’s Prince Harry and American actress Meghan Markle exchanged vows Saturday as throngs cheered from the grounds of Windsor Castle in a ceremony imbued with tradition and music.

Tens of thousands of spectators surrounded the castle, some of whom had camped there since Tuesday. They were able to watch the ceremony on a large outdoor screen.

Royals fans with Union Jack umbrella hats partake in the celebration. Photo by Marko Djurica/Reuters

Royals fans with Union Jack umbrella hats partake in the celebration. Photo by Marko Djurica/Reuters

Tens of thousands of people lined the Long Walk that leads to Windsor Castle. Photo by Yui Mok/Pool via Reuters

Tens of thousands of people lined the Long Walk that leads to Windsor Castle. Photo by Yui Mok/Pool via Reuters

The first of the 600 wedding guests began arriving at 4:30 a.m. EDT in morning suits, day dresses and, of course, frilly hats.

Celebrity guests included Oprah Winfrey, who wore a blush pink dress and wide-brimmed hat, a bearded, grey-suited George Clooney and his wife Amal Clooney in daffodil yellow.

Oprah Winfrey was one of the first guests to arrive at the chapel in Windsor, England. Photo by Ian West/Pool via Reuters

Oprah Winfrey was one of the first guests to arrive at the chapel in Windsor, England. Photo by Ian West/Pool via Reuters

Amal Clooney and George Clooney are among the friends attending the wedding. Photo by Gareth Fuller/Pool via Reuters

Amal Clooney and George Clooney are among the friends attending the wedding. Photo by Gareth Fuller/Pool via Reuters

Soccer star David Beckham and clothing designer Victoria Beckham arrive at the castle. Photo by Andrew Milligan/Pool via Reuters

Soccer star David Beckham and clothing designer Victoria Beckham arrive at the castle. Photo by Andrew Milligan/Pool via Reuters

Actor Idris Elba and his fiancee Sabrina Dhowre arrive at St. George's Chapel. Photo by Gareth Fuller/Pool via Reuters

Actor Idris Elba and his fiancee Sabrina Dhowre arrive at St. George’s Chapel. Photo by Gareth Fuller/Pool via Reuters

Meghan Markle's friend, U.S. tennis player Serena Williams and her husband entrepreneur Alexis Ohanian attend the nuptials. Photo by Odd Andersen/Pool via Reuters

Meghan Markle’s friend, U.S. tennis player Serena Williams and her husband entrepreneur Alexis Ohanian attend the nuptials. Photo by Odd Andersen/Pool via Reuters

Comedian James Corden and his wife Julia Carey enter the church on Saturday. Photo by Toby Melville/Pool via Reuters

Comedian James Corden and his wife Julia Carey enter the church on Saturday. Photo by Toby Melville/Pool via Reuters

Sarah Ferguson, the duchess of York, waves to the spectators. Photo by Gareth Fuller/Pool via Reuters

Sarah Ferguson, the duchess of York, waves to the spectators. Photo by Gareth Fuller/Pool via Reuters

St. George’s Chapel was decorated with white roses, the favorite flower of Prince Harry’s mother Princess Diana, who died in a car crash in Paris in 1997 when Harry was 12.

Charles Spencer, Princess Diana’s brother, attended with his wife Countess Spencer. Diana’s sister Lady Jane Fellowes gave a reading during the service.

Charles Spencer, brother of the late Princess Diana, attended with his wife Karen Spencer. Photo by Chris Jackson/Pool via Reuters

Charles Spencer, brother of the late Princess Diana, attended with his wife Karen Spencer. Photo by Chris Jackson/Pool via Reuters

Prince Harry walks with his best man and brother Prince William to the ceremony. Photo by Gareth Fuller/Pool via Reuters

Prince Harry walks with his best man and brother Prince William to the ceremony. Photo by Gareth Fuller/Pool via Reuters

Queen Elizabeth II and Prince Philip then arrived, along with Prince Charles and Camilla, duchess of Cornwall.

Prince Harry and his older brother Prince William both wore military uniforms of the Blues and Royals cavalry regiment of the British Army.

Britain's Queen Elizabeth II and Prince Philip, duke of Edinburgh, walk into the church. Photo by Odd Andersen/Pool via Reuters

Britain’s Queen Elizabeth II and Prince Philip, duke of Edinburgh, walk into the church. Photo by Odd Andersen/Pool via Reuters

Following tradition, Queen Elizabeth bestowed the title of the duke and duchess of Sussex on the couple’s wedding day. Since Markle does not have a royal background, she will not be called Princess Meghan, through she will technically be known as Her Royal Highness Princess Henry of Wales after her spouse (Prince Harry’s full name is Henry Charles Albert David).

The Duchess of Cambridge Kate Middleton (wearing ivory dress) arrives with the flower girls and page boys at St. George's Chapel. Photo by Jane Barlow/Pool via Reuters

The Duchess of Cambridge Kate Middleton (wearing ivory dress) arrives with the flower girls and page boys at St. George’s Chapel. Photo by Jane Barlow/Pool via Reuters

Markle rode with her mother Doria Ragland in a vintage Rolls Royce from the Cliveden House Hotel, about 10 miles from Windsor Castle.

Meghan Markle rides with her mother Doria Ragland to St. George's Chapel. Photo by Darren Staples/Reuters

Meghan Markle rides with her mother Doria Ragland to St. George’s Chapel, giving onlookers a first glimpse of the wedding gown. Photo by Darren Staples/Reuters

Meghan Markle's gown was designed by Britain's Clare Waight Keller of French fashion house Givenchy. Photo by Andrew Matthews/Pool via Reuters

Meghan Markle’s gown was designed by Britain’s Clare Waight Keller of French fashion house Givenchy. Photo by Andrew Matthews/Pool via Reuters

Her wedding dress was designed by Clare Waight Keller of French fashion house Givenchy.

Prince Charles walked Meghan down part of the aisle at the church. Her father, Thomas Markle, stayed at home in Mexico due to heart problems.

American bishop, the Most Rev. Michael Curry, leader of the Episcopal Church, gave the address at the wedding.

The Most Rev Bishop Michael Curry, leader of the Episcopal Church, gives an address during Prince Harry and Meghan Markle's wedding. Photo by Owen Humphreys/Pool via Reuters

The Most Rev Bishop Michael Curry, leader of the Episcopal Church, gives an address during Prince Harry and Meghan Markle’s wedding. Photo by Owen Humphreys/Pool via Reuters

Meghan Markle and Prince Harry exchange vows in St. George's Chapel. The wedding was conducted by the Archbishop of Canterbury Justin Welby. Photo by Owen Humphreys/Pool via Reuters

Meghan Markle and Prince Harry exchange vows in St. George’s Chapel. The wedding was conducted by the Archbishop of Canterbury Justin Welby. Photo by Owen Humphreys/Pool via Reuters

After the vows, British teenage cellist Sheku Kanneh-Mason performed several melodies, including Ave Maria. The entire congregation stood to sing “God Save the Queen,” capping the event.

All of the guests then filed into St. George’s Hall at Windsor Castle for a lunch reception, as the happy couple took a carriage ride around the town of Windsor, waving to well-wishers.

The wedding cake by Claire Ptak of London-based bakery Violet Cakes was a lemon elderflower cake with buttercream frosting. Photo byt Steve Parsons/Pool via Reuters

The wedding cake by Claire Ptak of London-based bakery Violet Cakes was a lemon elderflower cake with buttercream frosting. Photo byt Steve Parsons/Pool via Reuters

Britain's Prince Harry kisses Meghan Markle as they leave St. George's Chapel in Windsor Castle on May 19. Photo by Neil Hall/Pool via Reuters

Britain’s Prince Harry kisses Meghan Markle as they leave St. George’s Chapel in Windsor Castle on May 19. Photo by Neil Hall/Pool via Reuters

Prince Harry and his wife Meghan Markle take a spin around the town of Windsor in a horse-drawn carriage after their wedding ceremony. Photo by Dylan Martinez/Reuters

Prince Harry and his wife Meghan Markle take a spin around the town of Windsor in a horse-drawn carriage after their wedding ceremony. Photo by Dylan Martinez/Reuters

Official portraits:

Left-to-right: back row: Jasper Dyer, Duchess of Cornwall, Prince of Wales, Prince Harry, Meghan Markle, Doria Ragland, Duke of Cambridge; middle row: Brian Mulroney, Duke of Edinburgh, Queen Elizabeth II, Duchess of Cambridge, Princess Charlotte, Prince George, Rylan Litt, John Mulroney. Front row: Ivy Mulroney, Florence van Cutsem, Zalie Warren, Remi Litt. Photo by Alexi Lubomirski/Handout via Reuters

Left-to-right: back row: Jasper Dyer, Duchess of Cornwall, Prince of Wales, Prince Harry, Meghan Markle, Doria Ragland, Duke of Cambridge; middle row: Brian Mulroney, Duke of Edinburgh, Queen Elizabeth II, Duchess of Cambridge, Princess Charlotte, Prince George, Rylan Litt, John Mulroney. Front row: Ivy Mulroney, Florence van Cutsem, Zalie Warren, Remi Litt. Photo by Alexi Lubomirski/Handout via Reuters

Prince Harry and Meghan Markle pose with the page boys and flower girls in the Green Drawing Room of Windsor Castle. (Left-to-right: back row: Brian Mulroney, Remi Litt, Rylan Litt, Jasper Dyer, Prince George, Ivy Mulroney, John Mulroney. Front row: Zalie Warren, Princess Charlotte, Florence van Cutsem. Photo by Alexi Lubomirski/Handout via Reuters

Prince Harry and Meghan Markle pose with the page boys and flower girls in the Green Drawing Room of Windsor Castle. (Left-to-right: back row: Brian Mulroney, Remi Litt, Rylan Litt, Jasper Dyer, Prince George, Ivy Mulroney, John Mulroney. Front row: Zalie Warren, Princess Charlotte, Florence van Cutsem. Photo by Alexi Lubomirski/Handout via Reuters

The duke and duchess of Sussex are pictured together on the East Terrace of Windsor Castle. Photo by Alexi Lubomirski/Handout via Reuters

The duke and duchess of Sussex are pictured together on the East Terrace of Windsor Castle. Photo by Alexi Lubomirski/Handout via Reuters

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