Prince William rehearses Trooping the Colour parade
Prince William has taken part in a rehearsal for Trooping the Colour.
He rode down The Mall from Buckingham Palace in central London on a horse called Wellesley, behind the Duke of Kent - Colonel of the Scots Guards.
The event, known as the Colonel's Review, takes place a week before Trooping the Colour, which marks the Queen's official birthday.
Hundreds of soldiers were out on display for the ceremony, parading along The Mall to Horse Guards Parade.
Prince William, who served in the Blues and Royals, was made Colonel of the Irish Guards in February, and will take part in Trooping the Colour next Saturday for the first time.
A Palace spokeswoman said: "We can confirm that the Duke of Cambridge will take part in the Queen's birthday parade.
"He will ride as Colonel of the Irish Guards. All Royal Colonels of the Foot Guards including the Prince of Wales - who will ride as Colonel of the Welsh Guards - ride together as determined by the Major General of the Household Division."