Princess Eugenie and Jack Brooksbank today arrived at St George's Chapel for a last-minute rehearsal of their lavish wedding which will be watched by millions.
The Queen's granddaughter and her fiancé were seen pulling into the chapel in Windsor Castle this afternoon, less than 24 hours before they exchange their vows.
The rehearsal for the wedding took place at 12pm, MailOnline has learnt, with all the royals in attendance, including Prince George and Princess Charlotte.
They were followed by Eugenie's immediate family - her mother Sarah Ferguson, her father Prince Andrew and her sister and maid of honour, Princess Beatrice.
The bride-to-be beamed as she sat in the passenger seat of the car, driven by her tequila ambassador fiancé.
Princess Eugenie was followed by her parents Prince Andrew and the Duchess of York who, despite divorcing in 1996, remain on good terms.
The couple still live together in Royal Lodge in Windsor Great Park, just three and a half miles from the castle. As preparations for the big day continued, the royal family left Windsor Castle in the afternoon.
A lorry carrying circlets of pink roses and sprays of wind flowers was also seen arriving at the site.
Footage of the ceremony will be live streamed on The Royal Channel and The Duke of York's YouTube channels, as well as the royal family and Andrew's Facebook pages.
The wedding is also being screened in full on ITV as part of a special three-hour This Morning show live from Windsor, hosted by Eamonn Holmes and Ruth Langsford.
A small group of royal super-fans has descended on Windsor, sleeping rough outside the castle to bag the best patch of pavement for the wedding.
Bartley Graham, 30, a former civil servant, and his sister Sandra, 21, a factory worker, travelled all the way from County Durham for the big day.
They arrived last night and slept on the pavement in sleeping bags.
‘People call us the crazy corner. They call us all sorts of things,’ he said.
‘We have been compared to the migrant camps in Calais. It gets a bit annoying after a while. But we just love the royals and are proud to be British.’
His sister, Sandra, added: ‘We wouldn’t be British if we didn’t have the royals.
'It’s enjoyable. We’re not going to see many more of these events.’
Writer and carer Kerry Evans, 54, travelled from Hull for the big day.
‘It wasn’t too cold overnight,’ she said. ‘We’d have liked to pitch a tent but we’re not allowed, so we just had to sleep rough.
‘We’re not too tired, not with the adrenaline.
'We expected a big queue and are quite surprised that there’s nobody else here.’
Her friend, teacher Catherine Rohan, 61, added: ‘We love all the royals. It doesn’t matter whether they are A list or Z list.’
Windsor remained quiet overall today, with just two barriers around press areas as evidence of the festivities tomorrow.
Joseph Afane, 55, from Battersea, was wearing a Union Jack suit, glasses and hat.
‘Nobody is as committed to the cause as me,’ he said. ‘I don’t care if the crowds aren’t here yet. I am here and my friends are here. We have our flags and that is what matters.’