Viewers tuning into the late monarch's televised service on Sept. 19 were likely surprised to see the Grey's Anatomy alum among the 2,000 mourners at Westminster Abbey alongside foreign leaders and members of the royal family. However, Oh was at the service in an official capacity as a member of the Canadian delegation.
The Killing Eve alum, who was appointed as an Officer of the Order of Canada in June, walked alongside performing artist Gregory Charles and Olympic gold medal-winning swimmer Mark Tewksbury. For the occasion, Oh, 51, donned a black dress, a black hat, and a badge representing Canada. The trio were joined by prime minister Justin Trudeau, who was one of several heads of state in attendance.
The Governor General of Canada's website, noted that the honor was bestowed upon the actress "for her artistic career filled with memorable stage, television and film roles in Canada and abroad."
As one of the United Kingdom's commonwealth realms, Queen Elizabeth was monarch of the nation. Two days after her passing on Sept. 8, King Charles III was officially proclaimed Canada's monarch in a ceremony in Ottawa on Sept. 10. (Charles immediately acceded the throne following his mother's passing, with the United Kingdom and many of its commonwealth realms formally swearing fealty in the days following.)
During Queen's Sept. 19 funeral, King Charles was accompanied by most of the royal family, including Princess Anne, Prince Andrew, Prince Edward, Prince William, Prince Harry, Kate Middleton, and Meghan Markle. William and Kate's oldest two children, Prince George, 9, and Princess Charlotte, 7, were also in attendance to pay tribute to their great-grandmother.
Following the service, the Queen was buried in a private ceremony at St. George's Chapel in Windsor.