THE wedding of Princess Eugenie and Jack Brooksbank promises to be a lavish event with the pair due to tie the knot at noon today.
Queen Elizabeth and members of the Royal Family, including the Duke and Duchess of Cambridge, are expected to attend along with a handful of celebrities such as Cindy Crawford, James Blunt and Ellie Goulding.
After the wedding in Windsor Castle chapel the Queen will host an afternoon reception in St George’s Hall before the celebrations continue – probably into the early hours – at the Royal Lodge in Windsor Great Park.
A fairground has been erected, complete with a Ferris wheel, dodgems and a coconut shy.
The Queen's granddaughter, 28, admitted to being nervous ahead of her big day but added she couldn't wait to exchange vows with her boyfriend of seven years, an interview with Eamonn Holmes and Ruth Langsford.
Jack described his future wife as a "bright shining light" while Eugenie said he was "so humble and generous".
But the couple have faced criticism that the wedding will cost almost £2million due to increased fears of a terror attack.
The wedding was initially expected to cost around £750,000 - be be paid for by the couple's parents, but the extra funding has since come from the taxpayer.
The extra money will draft in officers on overtime rates, with some cancelling their holidays to be on guard.
Dozens of officers will also be required to search the open-top carriage procession route in advance and there will be a blanket ban on drones flying over the event too.
Here’s your guide to what’s happening when and who to look out for
9am – the day starts with wedding guests starting to arrive
10.25am – Members of the royal family are expected to arrive at the Galilee Porch, received by The Right Reverend David Conner, the Dean of Windsor
10.30am – Jack Brooksbank’s parents arrive
10.32am - Sarah, Duchess of York and Princess Beatrice arrive at the West Door
10.35am – Groom and his best man, Thomas Brooksbank arrive at the West Door
10.50am – Prince of Wales arrives at the Galilee Porch
10.52am – The Queen arrives at the Galilee Porch and is received by the Dean of Windsor – a fanfare is sounded
The wedding service
Choir and clergy procession – Peter Roper-Curzon will play Johann Sebastian Bach’s Allegro form Organ Sonata No 1 and Ralph Vaughan Williams’ Rhosymedre
Princess Eugenie will arrive to Fanfare, Adventus and will be led to the Organ Screen by her father, Prince Andrew
The Dean of Windsor will give the introduction
Hymn – John Newton’s Glorious Things of Thee are Spoken
The Marriage - neither Eugenie or Jack will offer to obey. Only Eugenie will wear a wedding band
Andrea Bocelli will perform Ave Maria with an orchestra conducted by Carlo Bernini
The First Reading – Charles Brooksbank will read from St Paul’s Letter to the Colossians, chapter 3 verses 12-16
The Second Reading – Princess Beatrice read from F Scott Fitzgerald’ The Great Gatsby
Andrea Bocelli performs Panis Angelicas
The address will be given by The Dean of Windsor The Right Reverend David Conner
Hymn – Immortal, Invisible, God Only Wise by W Chalmers Smith
Prayers led by the Archbishop of York John Sentamu
The anthem – a Gaelic Blessing sung by the choir
The blessing
Hymn – Charles Wesley’s Love Divine, All Loves Excelling
The Signing of the Registers – the choir sings Ubi Caritas
National Anthem
The bridge, groom and immediate family leave the chapel by the West Door
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The newly married couple are then expected to have a carriage procession.
They are due to leave from the Royal Mews out of the castle, go along part of the High Street before returning via Cambridge Gate.
The Queen then holds an afternoon reception at the castle.
The evening party is at Prince Andrew’s home in Windsor, The Royal Lodge which is three miles away from the castle.
Celebrations are expected to go on until the early hours.