The preparations had all been made, every last detail was place.
Now there was nothing left for Prince William to do except wait for the woman who won his heart when they were fresh-faced students some eight years ago.
Leaving Clarence House for Westminster Abbey, the Prince looked excited, if a little nervous, as he departed with chants from the crowd of "We want William" ringing in his ears.
With him was Prince Harry, his best man and the brother with whom he has shared highs and also the most painful of lows.
Both siblings were dashing in military dress: William chose the famous red tunic of the Irish Guards, reflecting his honorary role as the regiment's colonel.
Harry, who has served in a war zone, was in Blues and Royals uniform, with his Afghan campaign service medal pinned to his chest.
William spent his last night as a bachelor with his brother and father Prince Charles and stepmother the Duchess of Cornwall at Clarence House.
The family had enjoyed one last quiet dinner together as a quartet.
Now the eyes of the world were upon him as he arrived at the historic church.
On arrival, the brothers greeted the clergymen who will conduct the service, before mingling with the congregation, including Earl Spencer and his daughters.