Princess Charlotte is keeping Queen Elizabeth II close to her heart.

At the 2025 Trooping the Colour event in London held last weekend, the daughter of Prince William and Kate Middleton, who is 10 years old, honored her late great-grandmother with a subtle and touching gesture.

Charlotte wore a short-sleeved turquoise dress with white trim and white Mary Jane flats. She accessorized with a diamond brooch in the shape of a horseshoe.

Queen Elizabeth II reportedly gifted the equestrian fashion accessory to the pre-teen prior to her death at the age of 96 in 2022, as the late monarch and her great-granddaughter shared a mutual passion for horseback riding.

Charlotte debuted the sentimental brooch while attending Queen Elizabeth’s funeral in September 2022.

At the time, she styled the accessory with a black coat dress by Spanish childrenswear label Ancar, matching tights, buckled dress shoes and a chic boater hat by Jane Taylor.

The fashion move marked the first time Charlotte wore a significant piece of jewelry to a public event with the royal family.

As Page Six reported earlier Saturday, the Trooping the Colour event was held to honor the official birthday of King Charles III, who will turn 77 on Nov. 14.

For the occasion, Charlotte twinned with her mom, Kate Middleton, who wore an aquamarine coat dress with ivory lapels by Catherine Walker.

She completed the look with a matching wide-brimmed hat by Juliette Botterill and Bahrain Pearl Drop earrings formerly owned by Queen Elizabeth.

The celebration was the first Trooping the Colour parade Middleton, 43, attended since announcing her cancer went into remission earlier this year.

The Princess of Wales was also joined by her husband, Prince William, their other two children — Prince George, 11, and Prince Louis, 7 — and Queen Camilla.