The six-year-old is the only daughter of Prince William, 38, and Kate Middleton, 39. Over the years, Royal fans have been given glimpses of her personality, including various cheeky antics.
A notable snap of Charlotte was taken in 2019 at an Isle of Wight sailing regatta when she stuck out her tongue as a smiling Kate watched on.
And the Princess made her feelings clear to photographers in 2018 when she told them "you're not coming" to a tea party for younger brother Prince Louis, three.
In May 2019, the Cambridges released a video after Kate designed a garden for the Chelsea Flower Show.
Charlotte was filmed on a rope swing and William joined them.
Prince William can be heard in the background encouraging his children saying "well done, brilliant!"
He asked Charlotte 'can you help George?' to which she simply responded 'no' - before continuing to bounce around.
Speaking to The Mirror, royal expert Katie Nicholl said: "Charlotte is the most buoyant and outgoing of the three Cambridge children.
"It’s that strength of character that will stand her in good stead when she’s older."
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Princess Charlotte was born in 2015.
As the second child of The Duke and Duchess of Cambridge, Charlotte is fourth in line to the throne.
Constitutional expert Iain MacMarthanne predicts the Princess will receive a new title when she becomes an adult.
Mr MacMarthanne told Express.co.uk: "Looking to the future and assuming Prince William becomes King
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"It can be anticipated, should the title be free to be given and that he is so minded, that his daughter Princess Charlotte, might in time, become the next Princess Royal as the eldest daughter of the monarch."