Princess Charlotte is just seven years old - so her public appearances have been few and far between.
But when she has joined the Prince and Princess of Wales along with Prince George and Prince Louis for royal events, her often feisty personality has shone through - especially when it comes to keeping her brothers in check.
But in one of her early rare public appearances alongside her parents, she indulged in some very cheeky behaviour that appeared to leave her mum Kate shocked.
It came in 2019 when she attended a sailing regatta on the Isle of Wight alongside her mum, dad Prince William and her grandparents Carole and Michael Middleton.
The then four-year-old and Kate looked out of a window with the Princess of Wales waving to people that were standing below them.
But rather than follow her mum's lead, Charlotte poked out her tongue.
Kate didn't seem overly impressed when she realised what her daughter was doing.
Even though she was seen smiling broadly and giggling, she leaned forward to say something to Charlotte before turning her away from the window to make her stop and ushered her on.
But since that day, Charlotte has made many more public appearances - and at each one of them has charmed the crowds.
And Saturday will see her and her brothers out in public again for the annual Trooping the Colour King's Birthday parade.
Over 1,400 parading soldiers, 200 horses and 400 musicians take part in the display of military precision, horsemanship and fanfare.
The parade travels from Buckingham Palace down The Mall to Horse Guards Parade and closes with a Royal Air Force fly-past.
At this year's Trooping the Colour, the King and William will ride on horseback during the display, while other members of the Royal Family, including Kate, the Queen George, Charlotte and Louis, will watch from carriages and the Buckingham Palace balcony.
Last year's Trooping the Colour kicked off the late Queen's Platinum Jubilee celebrations, where Louis stole the show with his hilarious faces during the RAF flypast.
Thousands of spectators are expected to line the Mall to witness the King's Birthday Parade on Saturday.
The Trooping the Colour parade traces its origins back to the Middle Ages when each Lord or Baron flew their banner, known as a colour, so their followers could spot them in battle.
The annual event has marked the official birthday of the British sovereign for more than 260 years.
