Wherever Prince Louis goes, the five-year-old royal is guaranteed to bring light and laughter to any situation as his charming, cheeky personality turns royal stoicism on its head. Luckily for the Prince and Princess of Wales, there's always an attentive big sister on hand to make sure little Louis is behaving as he should.
Princess Charlotte, William and Kate's nine-year-old daughter, was an emblem of royal etiquette as she joined her family on the balcony of Buckingham Palace at Trooping the Colour on Saturday.
Keeping a close eye on her brother Louis, who was more interested in dancing, yawning and pointing at the excitement below him, Charlotte made sure to remind her sibling of the 'proper' way to behave - and one moment from their sweet sibling exchange has gone viral on TikTok.
In a clip from the BBC reshared by CNN anchor Max Foster (@maxfostercnn), Princess Charlotte can be seen telling Prince Louis to put his arms down as the fanfare begins for the national anthem.
The polite Princess nudges her brother gently, to which the youngest Wales sibling quickly moves his arms behind his back.
Reacting to the moment on TikTok, which has since gained over two million views on the platform, royal fans were quick to comment on Princess Charlotte's "future Queen" energy as she remained poised throughout.
"Did anyone notice, [Princess] Kate doesn't bother if the kids are restless, kids are kids no matter who, where, and when… older siblings will always be the BOSS, good on you Charlotte," penned one fan.
"Charlotte isn't bossy, my girl has leadership skills!" responded another, as a third wrote: "She was taught so well. She's in position and always so well behaved. Future Queen!"
A fourth penned: "Charlotte definitely shows leadership, Louis shows character."
Princess Charlotte displays leadership skill of a future monarch
Despite many royal fans likening Princess Charlotte to her late great-grandmother, Queen Elizabeth II, and noticing qualities about her that are recognisable of a future monarch, it is extremely unlikely that she will ever take the throne.
While she may be third in line to the succession of the British throne, her older Prince George would need to abdicate or pass away for her to slip into his shoes - and that's assuming the royal doesn't have any heirs of his own by then.
Instead, Princess Charlotte may take the position of Princess Royal, a title currently held by her great-aunt, Princess Anne. The Princess Royal has long been considered to be the King's closest confidante and most loyal aide, and has stood by him throughout his life and reign.
One royal fan wrote on X, formerly Twitter: "Princess Charlotte is the next Princess Royal. Just like how the King has always had Princess Anne have a steady support all their lives, Princess Charlotte is already a constant support to Prince George."