The Queen has said she is "inspired" by the goodwill of the nation as celebrations for her Platinum Jubilee begin.
In a Jubilee message, she thanked the public for organising events and said "many happy memories" would be made.
Elizabeth was a 25-year-old princess when she succeeded her father king George VI in 1952, bringing a rare touch of glamour to a battered nation still enduring food rations after World War II
The portrait released along with her message was taken by Ranald Mackechnie in the Victoria Vestibule at Windsor Castle earlier this year.
It was a bright, clear bank holiday Thursday that marked the start of the celebrations of an unprecedented moment in British history.