If she is suffering from pre-wedding nerves, Kate Middleton is keeping them well hidden.
The bride-to-be was all smiles when she arrived at Westminster Abbey today for a last-minute rehearsal ahead of her wedding. Another rehearsal was held late yesterday.
Joined by best man Prince Harry, she appeared happy and relaxed as she was escorted from the ancient building where tomorrow she will walk down the aisle, watched by up to two billion people around the world.
But at a time when many might succumb to a case of the jitters, Kate, 29, showed no sign of stress or strain.
Sitting next to her future brother-in-law and with a delighted smile on her face, she was driven away from the abbey accompanied by a police motorbike escort.
The bridal party - including bridesmaids, pageboys and members of Miss Middleton's family - spent an hour and 20 minutes in the abbey, leaving from the west door at around 10.50am in a convoy of blacked-out cars.
Footage from a television helicopter showed the group looking similarly calm and collected as they climbed into people carriers and made the short trip back to Clarence House.
It is thought that Kate's maid of honour Pippa Middleton also joined the group today. She will play an integral part in the ceremony and is likely to have the added job of looking after the younger bridesmaids, who include three-year-old Eliza Lopes, granddaughter of the Duchess of Cornwall.
Harry and Miss Middleton, who arrived at the abbey at 9.30am, were later joined by the fanfare team from the Central Band of the Royal Air Force.
Its arrival followed several media appearances this morning and performances for the BBC and American broadcaster NBC.
The band will be playing a specially-commissioned fanfare for the wedding called Valiant And Brave, the motto of No 22 Squadron, with which William serves as an RAF search and rescue helicopter pilot.
The musical piece will be performed just before the procession of the newly-married couple through the abbey.
Corporal Hamish Dean said the musicians felt "very proud" to have been asked to play at the "very prestigious event".
"Prince William obviously serves in the RAF and, when it was announced, we were hoping that it would be us asked to play," he added.
"We're all very excited."
He said they would be practising at the abbey all day today.
This morning's wedding run-through is the last time Miss Middleton or a member of the royal family will be at the abbey before the service gets under way tomorrow, St James's Palace said.
It came almost 12 hours after last night's big rehearsal which lasted 90 minutes and involved all the principal individuals involved in the ceremony.
Among the group were Dr Rowan Williams, the Archbishop of Canterbury, who will marry the couple, and the bride's father Michael Middleton.