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.
People on Twitter spotted the moment Prince George clocked his brother, waving his arms in the air wildly, and appeared to put his head in his hands, as if he were mortified.
The Duke and Duchess of Cambridge are shown having a good giggle over their son's excitement and Mia Tindall, sat behind Louis also burst out laughing.
Older sister Princess Charlotte didn't look particularly impressed, however, as she turned to look at Louis.
One person on social media said: "Nooo this is so cute! Prince William, Prince George, Princess Charlotte The Duchess of Cambridge and Mia Tindall’ reaction when Prince Louis was celebrating.
"Prince George’s reaction is the best."
Another posted: "George is like, 'not again Lou'."
Someone else wrote on Twitter: "Little kid living his best life. George: I'm dying. Make it stop."
"Love love love our Georgie," proclaimed a fourth. "The epitome of exasperated big bro."
While a different user added: "Love the Cambridge family dynamics."
"Prince George is adorable," tweeted a sixth.
A seventh person thought: "A very relatable family who own their actions, happiness, warts and all."
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