The Princess of Wales joined members of the royal family at Westminster Abbey on Monday, March 10, to celebrate Commonwealth Day. As part of the service, Kate and Prince William processed behind King Charles and Queen Camilla. They were followed by Anne, Princess Royal, as well as the Duke and Duchess of Gloucester.

Middleton — who scaled her royal schedule back last year due to her cancer diagnosis — joined Prince William, King Charles, Queen Camilla, Princess Anne, Prince Richard, Duke of Gloucester and Birgitte, the Duchess of Gloucester, for the commemoration.

The Princess of Wales is all smiles for her first Commonwealth Day appearance in two years. Kate Middleton looked radiant in red for the Service of Celebration at Westminster Abbey on March 10, beaming alongside Prince William as the pair joined King Charles,

Kate Middleton paid a subtle tribute to Princess Diana and Queen Elizabeth II with her fashion as she attended the Commonwealth Day celebrations in London March 10.

If her curtsy is any indication, Princess Kate works out. The Princess of Wales attended the Commonwealth Day service this morning alongside her royal family members, and photos show her dipping into an impressive curtsy upon seeing King Charles III.

Middleton wore a Catherine Walker coatdress in a shade of bright red with a twisted bow effect near the neckline. The slim-fitting dress featured circular buttons down the front placket and sharp shoulders with long sleeves and a midi length.

King Charles and Queen Camilla were joined by the Duke and Duchess of Gloucester at the annual Commonwealth Day service today. The couple, who have been married since 1972, arrived at Westminster Abbey arm-in-arm.