Princess Diana broke royal protocol for first time at ‘horrendous occasion’ with Charles
Diana, who was 19 years old, chose a “sensational black dress” to attend a party at the Royal Opera House, in London.
It is believed that “the Palace did not know about the dress she chose,” the experts at A Royal Guide To… Fashion revealed.
The stunning gown broke the royal protocol in many ways, including its design as it was an off-the-shoulder dress.
Also, “it was black… when the Royal Family don’t wear black unless they are mourning,” they explained.