Royal fans from around the world squealed with delight when the photos of Princess Charlotte arriving for her first day of school dropped.
Accompanied by her proud parents the Duke and Duchess of Cambridge and her big brother Prince George, the little princess looked totally at ease as she walked in Thomas's Battersea and met the head of the lower school.
But eagle-eyed fans noticed a little accessory pinned to Charlotte's school bag that highlights her sweet, girly personality.
While Prince William held Prince George's school bag, Duchess Catherine held her daughter's as they approached the school gates.
Attached to the bag, you can spot a sparkly pink unicorn key chain, a bright and glitzy accessory that stands out from the navy blue and red colours of the school uniform.
According to The Sun, the chain is from retailer Gainsborough Giftware and are sold in an assortment of three, priced per colour (pink, purple or multicoloured).
Duchess Catherine previously confirmed that pink is Princess Charlotte's colour of choice during a royal outing in 2017.
The Duchess of Cambridge, who was pregnant with Prince Louis at the time, spoke to six year-old Nevah Richardson-Natiko who presented her with some flowers. Nevah later told reporters that the royal mum had asked her what is her favourite colour saying: "I said it was pink and she said that's Charlotte's favourite colour, too."
Judging by the numerous time she's matched with her mum in the colour, we're not surprised that the little princess is a fan of pink!
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It appears that Princess Charlotte was very eager to start big school as Prince William can be heard saying in a video shared by Kensington Palace that she's "very excited."
What's more, the Duke and Duchess of Cambridge shared a sweet picture of their two eldest children in their smart school uniforms, positively beaming at the camera, that was most likely taken by keen shutterbug, Duchess Catherine.
Kensington Royal captioned the snap: "The Duke and Duchess of Cambridge are very pleased to share a photograph of Prince George and Princess Charlotte at Kensington Palace this morning. The photo was taken shortly before Their Royal Highnesses left for Thomas's Battersea."