Catherine, Duchess of Cambridge has shared her photographs of her son, Prince Louis, ahead of his fourth birthday tomorrow.
The pictures were taken on a beach in Norfolk, where his family has a home, and show him running on the sand and holding a cricket ball.
Kate, a keen photographer, has regularly shared pictures of her children on their birthdays.
Her caption this year simply reads: "Four years old tomorrow!", ahead of his birthday on April 23.
Previous images of Louis include one ahead of his third birthday, taken shortly before he left for his first day at a nearby nursery school.
Louis is a great-grandson of Queen Elizabeth II, and fifth in line to the throne, behind his grandfather Charles, father William and siblings George and Charlotte.
ABC/wires