Prince Harry has shared a new picture of his son, Archie, on Instagram, in celebration of Prince Charles' birthday.
The elder Prince, is 71 today and the Duke posted a black and white photo of the trio which was taken at the child's christening earlier this year.
The touching caption reads, "Happy birthday to His Royal Highness The Prince of Wales - Sir, Pa, Grandpa!"
The post has garnered 67,130 likes in just 20 minutes.
The Duke and Duchess of Sussex are very active on their Instagram account and earlier this month they used it to announce that Prince Harry was joining forces with Welsh rugby legend, Gareth Thomas to raise awareness of National HIV Testing Week.
