Rare images of Queen Elizabeth have been released as celebrations to mark the monarch's 90th birthday continue with a star-studded show in the grounds of Windsor Castle.
One of the images from archive footage shows a young Princess Elizabeth ready to go for a swim with her father.
Read more: Royals welcome new (furry) addition
With her arms outstretched and a beaming smile, the future Queen stands alongside George VI on the edge of an outdoor swimming pool, ready to take a dip.