The Royal Family have become "too normal", according to an etiquette expert.
Britain's Duke and Duchess of Cambridge
William Hanson says the younger generation "need to be careful" as they are starting to behave "like our friends from a grammar school".
He wrote: "The Royal Family have become too normal. Not all of them, of course, there are still a good handful who get the balance right. It's the younger generation who need to be careful. If the future of our monarchy is William, Harry and Catherine then heaven help us. On a weekly basis we seem to be getting more and more stories and pictures of them behaving like our friends from a grammar school.
"At the end of last week we saw a new image of the Duke and Duchess of Cambridge, released together with a kind note of thanks to those who had written to congratulate them on their fifth wedding anniversary. Catherine looked fine, but her royal husband, quite brazenly, had his left hand tucked in to his pocket, standing as if he waiting to give us all a presentation on telesales. Not a very royal image, really?"
And William Hanson went on to comment about the Invictus Games video Prince Harry appeared in with Queen Elizabeth.
Writing for the Mail Online, he added: "Then of course there was the 'hilarious' video for the Invictus games, featuring Prince Harry, the Obamas and the star of the show, The Queen.
"Yes, it raised a faint smile the first time you watched it but after that it just felt a bit too needy, a bit too 'look at us [Her Majesty aside] being zeitgeisty'. Boom. That 007 Olympics sketch has a lot to answer for - I did worry at the time it would set a dangerous precedent."