By now, you'll likely have seen Prince Louis' cheeky antics during the Platinum Jubilee celebrations - pulling hilarious faces and blowing raspberries at his mum, Kate Middleton.
But you might have been so distracted by the little royal, that you missed out on the brilliant reactions his family had to him.
Eagle-eyed royal fans were watching all of the Cambridges as four-year-old Louis celebrated very enthusiastically during the Platinum Pageant and it seems his older brother's response to his behaviour has gone viral.
