Princess Eugenie, ninth-in-line to the throne, married her fiancé in Windsor's St George's Chapel on Friday.
Britain's Princess Eugenie, the daughter of Prince Andrew and Sarah “Fergie” Ferguson, and Jack Brooksbank have left St George's Chapel as husband and wife.
The couple exchanged vows and rings shortly before 12.15pm BST on Friday.
They were greeted by a wall of cheering spectators before exiting the grounds in Windsor in a horse-drawn carriage.
It was the second royal wedding of the year to be hosted in the small royal town in southern England after Prince Harry married his American bride there, actress Meghan Markle, in May.
Eugenie, 28, is ninth-in-line to the throne and a director at the London gallery Hauser & Wirth. Her fiancé, Jack Brooksbank, is a drinks executive and the UK ambassador for Casamigos Tequilla, a brand co-created in 2013 by George Clooney.
In an interview with ITV on Thursday, Eugenie said nerves were "definitely creeping up" and described being "all butterflies" when the couple first met, while skiing in Switzerland in 2010.
Although a smaller affair than Harry and Meghan's nupitals, windy weather threatened to hamper the start of the ceremony after a number of guests lost hats or were left exposed by the breeze.
Who is attending?
The guest list for the start-studded event was 850-strong and included the likes Cara Delevingne, Naomi Campbell, Kate Moss, Ellie Goulding and Robbie Williams. American actresses Demi Moore and Liv Tyler were also seen arriving.
Catherine Middleton's siblings, Pippa and James, are also in attendance.
Most of the royal family were also present to celebrate the nuptials, including the Duke and Duchess of Cambridge and the Duke and Duchess of Sussex.
Several of the Queen's great-grandchildren — including Prince George and Princess Charlotte — are in the bridal party, while Eugenie's sister, Princess Beatrice, is the blushing bride's maid of honour.
Prince Charles, the heir to the throne is present. Camilla, Duchess of Cornwall, however, was not attending as she has a prior engagement. As per royal protocol, the Queen and her husband, the Duke of Edinburgh, were the last to arrive before the bride.
Just like Harry and Meghan before them, Eugenie and Jack have also invited 1,200 members of the public to watch the wedding from the grounds of Windsor Castle.
Eugenie's wedding dress was designed by Peter Pilotto and Christopher De Vos and features a neckline that folds around the folders to a low back that drapes into a flowing full length train.
The fabric also includes a number of symbols that are meaningful to the bride such as the Thistle for Scotland — to acknowledge the couple's fondness for Balmoral — and a Shamrock for Ireland, where Sarah Ferguson's family is from.
Completing the outfit it the Greville Emerald Kokoshnik Tiara, lent to the Princess by the Queen. It is made of brilliant and rose cut diamond pavé set in platinum, with six emeralds on either side.
Italian tenor Andrea Bocelli is to perform during the ceremony, alongside musicians from the Royal Philharmonic Orchestra.
Flower displays at St George's Chapel have been created by designer Rob Van Helden using foliage and flowering branches sources locally from Windsor Great Park. They are combined with roses, spray roses, hydrangeas, dahlias and berries to reflect "the rich and vibrant tones of autumn," according to a previous statement.
Thousands of well-wishers are also expected to line the streets of Windsor to cheer the newly-married couple as they drive past in a carriage procession at Midday (UK time).
The celebration will then continue with an afternoon reception hosted by the Queen in St George's Hall, followed by an evening party at the York family home, the Royal Lodge, in Windsor Great Park.
Who pays for the wedding?
The families are paying for the ceremony and the parties.
But according to campaign group Republic, the policing bill footed by taxpayers could reach up to 2 million pounds (€2.3 million).
The group has launched a petition in protest, calling for the royal family to pick up the policing tab and for the government to publish a full report on all costs to taxpayers. On Friday morning, it had collected more than 46,000 signatures.