Princess Eugenie, the younger daughter of Prince Andrew and Sarah Ferguson, is set to Wednesday Jack Brooksbank in a two-day extravaganza, marking another highly-anticipated union to take place at St George's Chapel at Windsor Castle.
The West Door of St George's chapel was decorated in autumnal splendour ahead of the wedding.
"This is meant to be a family wedding", Andrew said earlier.
Britain's Princess Eugenie arrives accompanied by her father Prince Andrew, Duke of York, at St George's Chapel for her wedding to Jack Brooksbank in Windsor Castle, Windsor, Britain October 12, 2018.
The low neckline of the dress accentuated the bride's elegant emerald drop earrings, which were given to her as a wedding gift from her groom Jack.
Princess Eugenie is wearing a gown designed by Peter Pilotto and Christopher De Vos for her wedding to Jack Brooksbank.
Eugenie and Brooksbank, 32, have dated for many years.
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And Trump has threatened to veto a bill funding the Homeland Security Department and other parts of the government without it. It took most of President Barack Obama's first term for a Democratic Senate to confirm a similar number of appellate judges.
After the service, the couple will embark on an open-top carriage tour of Windsor, although shorter than the one Harry and Meghan, now the Duke and Duchess of Sussex, took when thousands lined the streets of the town. Her sister, Princess Beatrice, will be maid of honour.
Eugenie and Brooksbank are following a precedent set by Harry and Meghan by inviting 1,200 members of the public to the castle grounds for a better view of Friday's festivities.
Stars at the nuptials will include former Take That singer Robbie Williams and his wife and fellow X Factor judge Ayda Field, whose six-year-old daughter Theodora is one of the bridesmaids.
But there are some differences from Harry and Meghan's wedding.
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.
Eugenie told ITV, which broadcast the hour-long service in Britain, that she was both excited and a bit on edge.
The presence of so many royals - and a number of celebrity guests - has prompted extra security measures to be put in place.