Prince Harry has declared he is ready to play the proud, protective uncle for his new nephew Prince George and "make sure he has fun".
Speaking at an exhibition for his charity, he said it was "fantastic" to have another addition to the royal family, adding, "I only hope my brother knows how expensive my baby sitting charges are!"
When asked what his mission was as an uncle, Harry replied: "To make sure he has a good upbringing, and keep him out of harm's way and to make sure he has fun."
"The rest I'll leave to the parents."
The latest addition to the royal family has been named Prince George Alexander Louis, but where did the Prince get his names?
The Duke and Duchess of Cambridge have named their son George Alexander Louis, Kensington Palace said.