When King Charles was addressed at the Commonwealth Day Ceremony in London, Princess Kate didn't bow to him.

Just once a day is required for the members of the Royal Family to bow to the King and Queen.

Kate made no gesture, which would indicate that she had already spent the day with her father-in-law.

TikTok has rekindled interest in the curtsy made famous by Princess Kate.

Commonwealth Day honors the Commonwealth of Nations and its constituent nations.

Senior royals attend a ceremony at Westminster Abbey on this day.

Princess Kate wore a navy peplum jacket and skirt by the designer Erdem.

She wore a brooch with Prince of Wales feathers that the king had given to her.

There is still a lot of curiosity and debate around Kate's behavior.