William was also dressed as an Irish Guards officer. Billy Lowther- Pinkerton, 10, the son of William’s private secretary Jamie Lowther-Pinkerton and Tom Pettifer, eight, son of William’s former nanny Tiggy Pettifer were dressed in Guards’ red with gold piping.
Shamrocks are on the collars and its buttons are arranged in fours, denoting the Irish, or 4th, Regiment of Foot Guards.
The buttons feature the Harp of Ireland surmounted by the crown imperial.
The pages wore a gold and crimson sash worn by officers in the Irish Guards when in the presence of a member of Britain’s royal family.