As Prince George, his younger sister Princess Charlotte, and a handful of other young royals stood on the balcony at Buckingham Palace and watched a fly-past of aircrafts by the Royal Air Force, Peter and Autumn Phillips' 7-year-old daughter, Savannah, was not about to put up with her 4-year-old cousin's rowdiness.
Another user suggested the controversy was a case of "political correctness gone mad, while another asked: "So what if Prince George was playing with a gun????"
Another person commented that while "Prince George might be our future King", Savannah "decides she's the boss on the balcony".
Prince Harry played with a toy gun in 1990.
George, four and Charlotte, three could be seen careering around the grounds at the Beaufort Polo Club wearing the Hampton plum canvas shoes which cost just £26 a pair. "Unbelievable! #KensingtonPalace shame!" said one Twitter user.
How relaxed and happy does Kate look?
Over the course of the day, the little royals could be seen playing with a huge slinky, a miniature golf set, arts and crafts and the controversial toy gun. My American side here, biased maybe b/c of everyday gunviolence in US, but my British side agrees.
The children entertained themselves with toys and ran around in the sunshine - and the pictures of the fun family day out are too sweet. "THAT is #girlpower", one person wrote.
When it comes to toys and playing, it's been known that the Duke and Duchess encourage their littles ones to go outside. Better if he was seen playing with a toy auto or football.
Never one to leave out great accessories, the British royal completed the outfit with a structured white Victoria Beckham tote and Russell and Bromley espadrille wedges (a smart move for walking on grass!).
Royal fans rarely witness the Cambridge family in this kind of setting - more regularly seeing them at official royal events.