In Andrew Morton’s landmark biography of Diana, he writes her disdain for royal family Christmases began as early as 1981, the year she married Prince Charles

Royal biographer Andrew Morton reveals that the late Princess of Wales "hated" spending Christmas at Sandringham every year. He even shared how one particular family tradition left the Princess "mortified." Morton, author of the bestseller Diana ...

Princess Diana was reportedly 'mortified' by one particular Christmas tradition during her family festivities at Sandringham and 'hated' attending each year according to a royal biographer

The first holiday with your significant other's family is always stressful, but not everyone's in-laws are literal royalty. So imagine how Princess Diana must have felt when she celebrated her first Christmas with the Windsors and ended up breaking royal protocol to top it off.

Although Christmas is often thought to be a time for family festivities, even Princess Diana wasn't immune to feeling less than thrilled about spending the holiday period with her royal relatives

As was the case for Princess Diana, who absolutely despised spending Christmas with the royal family. According to royal biographer Andrew Morton, who wrote Diana: Her True Story, the late princess developed contempt for the traditional royal holiday celebrations during her first Sandringham Christmas in 1981.