The cheeky chap was all-smiles in the picture captured by snapper Millie Pilkington, who recently photographed his brother Prince Louis.
The prince is shown sitting on a set of outdoor steps at Windsor earlier this month wearing a checked shirt and teal trousers.
The future king turns ten on Saturday and has had an eventful month in the lead up to his birthday.
It comes after George watched from the Royal Box on Wimbledon’s Centre Court as Carlos Alcaraz beat Novak Djokovic last Sunday.
He sat next to his sister Princess Charlotte, who was making her first visit to the tournament.
Prince George Alexander Louis was born in the private Lindo Wing of St Mary’s Hospital, Paddington, London, at 4.24pm on July 22 2013, weighing 8lb 6oz.
He will be the 43rd monarch since William the Conqueror to wear the crown if he follows the reigns of his grandfather, the King, and then his father, William.
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