She loved playing pranks on unsuspecting people, too.

Photo: Getty

Princess Diana was loved by many for appearing down to earth in the public eye, but behind closed doors, the royal also had an often=naughty sense of humor, according to Richard Dalton, her former hairstylist.

“After seeing her every day for over a decade, it was fun to relive the memories,” Dalton told People, in support of the forthcoming book It’s All About the Hair—My Decade with Diana, which was written by his friend, Renae Plant. The book, he said, was written to show showing “how funny Diana was…just what a wonderful, genuine person that she was.”

According to Dalton, Diana had an “amazing, wicked sense of humor” that was “very naughty at times,” despite her royal status. The late princess’s “jokes were hysterical,” and part of Diana’s humor included playing pranks on unsuspecting individuals.

“She always had plastic vomit or plastic dog poop in her bag to place on people’s seats when we traveled on long flights,” he said. “She was hysterically funny and loved playing jokes on all of us.”

Getty

Getty

In the book, Dalton gave one example of many of Diana’s jokes. When he was once followed by one of Queen Elizabeth’s corgis to a dressing room, the princess made a joke at her own expense about her fake tan.

“I was patting it, as I love dogs, when Diana came up and the corgi started to lick her legs,” he wrote. “She said, ‘Whose dog is that?’ I said, ‘It’s your mother-in-law’s new corgi.’ She replied with a laugh, ‘Well, get it out of here, as it’s licking all the fake suntan off my legs.’”

Plant also noted that she finds “the humorous side of Diana to be very sweet…She just wanted to be ‘normal’ and was just like the rest of us.”