GB News called Prince Louis's Trooping the Colour appearance a "subtle transition," with the royal essentially debuting a "new look" by perfectly twinning with Prince George. "Prince Louis marked a significant departure from previous years," the outlet reported, while also stating that the royal's "choice breaks with a longstanding custom."

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.

The flight crashed shortly after takeoff on Thursday, killing 241 people on board and at least 29 on the ground.

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.

"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.

Former BBC royal correspondent Jennie Bond discussed Princess Kate's position during the Trooping the Colour parade, which saw her sitting with King Charles and Queen Camilla to w