Anyone spot the fourth in line to the throne in this photo? Thought not...
William also had a go but his was a very sophisticated photobomb. A genteel smile over the shoulder of sporting knight of the realm, Sir Chris Hoy, completed the set of selfie stealing moments.
Six times Olympic gold medallist and poster boy for the Commonwealth Games, Sir Chris Hoy, provides the perfect setting for a future king's photobombing
That's not to say a Kate photobomb wouldn't be welcome but for the time being, a hat trick of royal social media star turns is enough to keep everyone happy. And those two young princes have shown that in some things, it's always best to do as granny does.