Thousands of well wishers celebrated the Queen's official birthday as the milestone was marked by a Trooping the Colour parade full of pomp and pageantry.
The Monarch took the royal salute during the televised military spectacle as senior members of the royal family looked on.
For decades the Queen has taken part in the event staged every June in London's historic Horse Guards Parade in Whitehall.
This year the ceremony marked the 83rd birthday of the Sovereign who has reigned over the country since 1952.
The precision marching by hundreds of Guardsmen taking part was also enjoyed by their families and friends who watched from stands over looking the ground.
Amongst the royal party were Prince William and Prince Harry, their stepmother the Duchess of Cornwall and the Duke of Edinburgh.
The Prince of Wales took part in the event along with his sister the Princess Royal.
Under cloudy blue skies the Queen arrived in Horse Guards Parade to play her important role in the ceremony.
The Monarch first took the royal salute in 1951, when she deputised for her ill father George VI, and has continued receiving the mark of respect every year except 1955 when there was a national rail strike.
Her first duty was to inspect the long line of troops - wearing their famous red tunics and bearskin hats -from the four Foot Guards regiments of the Household Division taking part - the Irish, Grenadier, Scots and Coldstream Guards.
