Princess Diana was dubbed “Sleeping Beauty” for napping while attending a royal engagement.

A throwback photo featuring the late Princess of Wales sleeping while sitting on a chair has resurfaced on Instagram. In the snap, the royal is stunning in her beautiful blue gown, but she looks tired and gives in to her body. The photo was taken a day before the royal family announced her first pregnancy.

“Sleeping beauty. Diana nodded off in public on the evening of November 4, 1981. The next morning, Buckingham Palace announced she was expecting her first child,” the caption read.

Royal fans who saw the photo praised it because it showed the People’s Princess innocence. Princess Diana was only 20 years old at the time and was still very innocent.

Meanwhile, some praised the royal mom for her fashion. According to one social media user, she was a fashionista. Many also said that Prince William and Prince Harry’s mom was a “real princess” and a “princess like no other.”

A different user said that Princess Diana looked so proper even when she was sleeping in public. “So vulnerable and precious,” another netizen added.

According to royal biographer Ingrid Seward, Prince Charles and Princess Diana had a happy marriage after welcoming Prince William. However, their joy did not last long. When they welcomed their second son, Prince Harry, he was already born into an “unhappy marriage.”

“By the time Prince Harry was born in 1984, he was born into an unhappy marriage. I think Diana very much hoped that he would be the band-aid to keep the marriage together, but it wasn’t to be,” Katie Nicholl wrote.

The changes in Princess Diana during those years were visible in her photos. Snaps of Princess Diana with newborn Prince William and Prince Harry were shared on Instagram.

Princess Diana looks so happy in them with Prince William. Many can feel her joy as she poses with her first son. However, she looks more serious in her picture with Prince Harry. Netizens said that there was a huge difference in her looks in just a span of two years.

Prince Charles and Princess Diana
Prince Charles and Princess Diana are pictured attending a centenary service for the Royal College Of Music on Feb. 28, 1982 at Westminster Abbey, London. Fox Photos/Hulton Archive/Getty Images