Previously unpublished family photographs of the Queen as a young girl are to be seen by the public for the first time.
A book being released to mark the birth of Prince George contains three new pictures which show the Queen between the ages of two and four.
In each of the images, taken by her parents, the then-princess demonstrates that she had a love of horses from a young age.
One photograph taken by her father, the future King George VI, sees the young Princess Elizabeth sitting on a toy horse at Naseby Hall in Northamptonshire in 1928, with her mother by her side.