Kate Middleton's Trooping the Colour outfit had a deeper meaning. All about why the Princess of Wales wore aqua to King Charles' birthday parade on June 14.

Senior working royals including Prince William, Kate Middleton, Princess Anne, Prince Edward and Queen Camilla will reportedly take part in the king's birthday parade.

While the cost of this year’s event has not been confirmed, it was revealed by the Ministry of Defence in 2021 that it cost them £59,662.70 that year for Trooping the Colour - a fact that was revealed after a freedom of information request.

Kate Middleton, Prince William and their kids are among the royal family members appearing at King Charles' birthday parade, Trooping the Colour. Get the latest updates and photos on the 2025 event.

When does Trooping the Colour 2025 start and end, and what is the order of events? Here is the full schedule and parade route revealed.

"Set with diamonds, sapphires, rubies and emeralds, the bejewelled piece features the cypher of her father, King George VI," Zack Stone, a fine jewelry expert from U.K. retailer Steven Stone, shared with WWD.

Ahead of Saturday's festivities, King Charles III also honored a handful of celebrities and public figures, including David Beckham, Gary Oldman and Elaine Paige.

Kate Middleton and her daughter, Princess Charlotte, wore matching blue ensembles to the annual Trooping the Colour event, which serves as the public celebration of King Charles’s birthday—though his actual birthday is in November.