Prince George is growing up so fast!
George is understood to be spending his birthday with his non-royal grandparents on the Caribbean island of Mustique, where Carole and Michael Middleton have joined the Duke and Duchess of Cambridge and their three children for a summer break.
Prince George was nearly as big a star at Princess Charlotte's christening as his baby sister.
The location of the young prince's fifth birthday party is a mystery.
Prince George meets a bilby called George at the Bilby Enclosure, named for the prince, at Sydney's Taronga Zoo on April 20. Prince Louis is 2 months old, while Princess Charlotte, George's sister, is 3 years old. It was George's second official public engagement of his young life, during his parents' Down Under tour of Australia and New Zealand. George has indulged in some serious conversation with the U.S. president Obama.
George was photographed with a rocking horse that Obama had given him when he was born.
Proud mom Kate captured a photo of a beaming George in January 2016 when he started nursery school.
The little prince was very interested in the tail rotor.
On Prince George's birthday, we look back at his cutest ever moments; from his many Buckingham Palace appearances to the time he met Barack Obama in his dressing gown, Prince George is one of the world's most adorable (and famous) tots.
Prince William was an RAF search and rescue pilot.