Princess Diana, Prince William and Prince Harry spent their Saturday night like how a regular household does.

According to the late Princess of Wales' butler, the trio loved to munch on McDonald's while watching "Blind Date." They were also very involved when watching the show.

"The three of them would nip to McDonald’s for a Big Mac and fries before coming back to watch [UK reality TV series] Blind Date," Paul Burrell said. "All three of them would squat on this massive, stuffed hippopotamus Diana had in her sitting room. They loved Blind Date and you’d hear them all screaming things like 'Oh don't pick him!'"

Former Buckingham Palace chef Darren McGrady also spoke about Princess Diana and her kids' love for McDonald's. In fact, there was a time when she ordered McGrady to cancel their lunch because she wanted to take the Duke of Cambridge and Duke of Sussex to the fast-food chain.

"I remember the Princess came into the kitchen one day and said, 'Cancel lunch for the boys I'm taking them out, we’re going to McDonald's," McGrady told Marie Claire. "And I said, 'Oh my God your royal highness, I can do that, I can do burgers.'"

"She said, 'No, it's the toy they want.' Yeah, the boys loved McDonald's, and going out [for] pizza and having potato skins —sort of the American foods. There were royal princes but had children's palates," the royal chef added.

Princess Diana had always wanted to live a normal life, according to her bodyguard. She tried to give this kind of life to her sons. However, she still didn't get what she desired.

"They're no different from any other child. Diana was always keen to bring some normality. One of her famous catch phrases was 'I want to be normal,'" Ken Wharfe told Yahoo News' "Royal Box."

"Well it isn't normal to have X number of shifts, it isn't normal to have access to more than one palace to have these luxury holidays, specialised travel and a helicopter land in your backyard," Wharfe explained. "Being in the royal family is a piece of theatre, this is unreal - you are performing."

Princess Diana, Prince William and Prince Harry
Princess Diana, Prince William and Prince Harry usually spent their Saturday night eating McDonald's and watching "Blind Date." Pictured: Princess Diana, Prince Harry and Prince William gather for the commemorations of VJ Day on Aug. 19, 1995. Getty Images/Johnny Eggitt