By DAILY MAIL REPORTER
New picture: This portrait of the Prince William and Kate Middleton by celebrated photographer Mario Testino was published in the official programme
Couple trying to 'block out terror' of wedding watched by two billion
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Royal pair broke with tradition by writing own message in official programme
150,000 souvenir copies of A5 guide available tomorrow for £2 each
Kate Middleton and Prince Harry at the Abbey this morning for the last run-through. Two billion people are expected to watch the ceremony tomorrow
Kate Middleton arrived at Westminster Abbey today where she was cheered by crowds of wellwishers just 24 hours before she marries Prince William.
She was joined by best man Prince Harry, as well as the bridesmaids and pageboys and members of her family for one final rehearsal of the big day which will be watched by two billion people round the globe.
The last run-through was taking place as it was revealed Miss Middleton will not promise to 'obey' Prince William in her vows.
Last practice: Kate Middleton, with her mother Carole and Prince Harry, gets into a Jaguar and leaves Westminster Abbey this morning after a final run through. The next time she will be back there will be for the wedding
Today thousands of royal fans had set up tents outside the Abbey where there was a carnival atmosphere.
As Kate arrived this morning a huge cheer went up from the royal fans who had arriving from round the globe.
Waving their Union flags, the crowds were up only to wave to the passing Household Cavalry this morning before the bride-to-be arrived for a last run through.
Grinning bride: A smiling Kate Middleton, right, arrives at Westminster Abbey for the last run through. Left, her sister Pippa enters with bridesmaid Grace van Cutsem
It 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.
Today the journalist who carried out the couple's engagement interview said they were attempting to 'block out the terror of having two billion people' watching them tomorrow.
Last hours: Kate Middleton and Prince Harry leaves Westminster Abbey with family and friends this morning just a day before the ceremony after the final run through
Official programme: William and Kate said in their message at the start of the keepsake that they would like 'to thank everyone most sincerely for their kindness'
Wellwishers: Susanna Buckman, from Maryland, U.S. and Jessica and Chelsea Spence from Zimbabwe in the tented village outside Westminster Abbey this morning
Royal father: Prince Charles arrives at Clarence House this morning hours before his son marries Kate Middleton tomorrow
Wedding guide: Kate will not vow to 'obey' William it was revealed in vows printed in the official guide this morning. Pictured right, Kate Middleton leaves the final rehearsal last night ahead of the big day
Final preparations: The household cavalry ride past Westminster Abbey early this morning on the day before the Royal Wedding
Clock ticking: Kate Middleton arrives at Westminster Abbey with Prince Harry for today's rehearsal ahead of the wedding tomorrow
Final rehearsal: Prince William and fiancee Kate Middleton leave Westminster Abbey together last night after a last wedding run through
Catering staff are scanned as they enter Westminster Abbey this morning
Beaming: Bride-to-be Kate Middleton as she leaves Westminster Abbey this morning
By Royal Appointment: Page boy Tom Pettifer, eight, and Lady Louise Windsor arrive for the rehearsals this morning
Final countdown: Tents line the street outside Westminster Abbey this morning where William and Kate will wed in a service conducted by the Archbishop of Canterbury
Run-through: Sophie Wessex, left, arrives at Clarence House this morning and, right, Kate Middleton's mother Carole leaves for Westminster Abbey
Official programme: 150,000 copies have been printed of the A5 booklet, costing £2 each, which will be made available along the route on the wedding day by a team of military cadets and Explorer Scouts
Royal fans: Enthusiasts sleep on the streets - one of them in a tent adorned with a Union Jack - outside Westminster Abbey as they guarantee themselves the best spots for tomorrow's ceremony
Tent city: Hundreds of campers were set up outside Westminster Abbey this morning and cheered as Kate Middleton and senior members of the Royal family arrived for a run through
Exclusive entrance: Workmen erect a screen at the front of The Goring hotel which Kate Middleton has chosen as a base for herself and her closest family ahead of the royal wedding
Royal pizza unveiled