Princess Diana chose not to tell Prince Charles that she was expecting a boy when she was pregnant with Harry as she knew that he wanted a daughter

FILE – In this Sept. 16, 1984 file photo, Britain’s Prince Charles and Princess Diana, leave St. Mary’s Hospital in Paddington, London, with their new baby son. Princess Diana carries new baby, Prince Harry who was born on Sept. 15. It has been 20 years since the death of Princess Diana in a car crash in Paris and the outpouring of grief that followed the death of the peoples princess. (AP Photo, File)