Despite attempts to give off the impression of unity, the absence of key family members was difficult to ignore.

King Charles and Queen Camilla, who have made Christmas morning mass at Sandringham Church an annual tradition, were joined by Prince William, Kate Middleton, and their three children: Prince George, Princess Charlotte, and Prince Louis.

King Charles and his family strolled to St Mary Magdalene, a 16th-century church on the Sandringham estate, part of a royal family tradition that's been going for decades.