Prince Harry, 33, the grandson of Queen Elizabeth II, married Meghan Markle, 36, an American actress, at Windsor Castle.
Prince Harry and Meghan Markle have become husband and wife in a moving ceremony at Windsor Castle. An emotional-looking prince and his smiling bride exchanged vows and rings before the Queen and 600 guests at St George's Chapel.
Ms Markle, wearing a white boat-neck dress by British designer Clare Waight Keller, was walked down the aisle by Prince Charles.
At the altar, Prince Harry told her: "You look amazing."
After the service the couple - who will now be known as the Duke and Duchess of Sussex - kissed in front of cheering well-wishers on the steps of the chapel.
Thousands of members of the public turned out in bright sunshine to see them driven around Windsor in a horse-drawn carriage.
Later, Prince Harry drove the couple to their reception in a silver blue Jaguar, with a registration plate that referenced the date - E190518.
Guests at the wedding included Oprah Winfrey, George and Amal Clooney, David and Victoria Beckham and Sir Elton John, who later performed at the wedding reception.
Ms Markle's sculpted dress was designed by Ms Waight Keller for French fashion house Givenchy.
Most striking was a diamond bandeau tiara, loaned to her by the Queen, and a trailing five-metre silk veil embroidered with the flowers of each country in the Commonwealth.
Prince Harry, 33, and his brother and best man, the Duke of Cambridge, wore the frockcoat uniform of the Blues and Royals.
He was given special permission from the Queen to keep his short beard as it is customary to be clean-shaven when dressed in Army uniform.
Their 10 young bridesmaids and pageboys - including Prince George and Princess Charlotte - rose to the occasion.
However, the excitement became too much for one of the younger ones who started crying just before Ms Markle, 36, entered the chapel.
Prince Charles walked Ms Markle down the aisle, after her father, Thomas, was unable to attend for health reasons.
Mr Markle, 73, reportedly watched the ceremony from California. He told the US celebrity website, TMZ: "My baby looks beautiful and she looks very happy."
Ms Markle's mother, Doria Ragland, stayed with her daughter overnight before accompanying her to the chapel.
- Source: News agencies