Princess Diana made light-hearted jokes about sex and the use of anti-depressants, her personal letters have revealed.
The former Princess of Wales, who was married to King Charles from 1981 to 1996, made the comments in a series of exchanges with the actor Terence Stamp, who died last year, aged 87.
The two were close friends – and their letters reveal the intimate topics they discussed freely with one another.
In one letter, dated October 1991, the late royal mentioned Prozac, a type of antidepressant medication. In others, she made a joke about sex during "married life".
The letters are owned by the estate of the late actor and are set to go under the hammer with Bonhams from June 15 at the Sound & Cinema sale. It's expected they will fetch between £1,500 and £2,000.
Other items, including the late actor's scripts, costumes, photographs, and other personal correspondence, will also feature.
What do the letters say?
Thanking Terence for the "risotto" and a recent luncheon, Diana wrote: "Not many people would take the time and trouble to delve into such a complex situation…
"Three cheers for Prozac, not the American variety I hasten to add! Lots of love Terence and a huge thank you, from Diana x."
© Tim Graham Photo Library via GetA month later, she thanked Terrence for having her for lunch, adding that she wasn't having "Prozac withdrawals, as yet!"
In December 1991, she requested lunch with a tongue-in-cheek postcard wishing him "All the Breast from London," with an explicit picture on the front.
In another lunch invitation, she sent him a humorous card reading: "Why did God invent sex?" with the answer joking: "So that married people do something at least twice a year." The comment was made while she was still married to Charles, before their 1996 divorce.
© Getty ImagesThe letters provide a very personal insight into the life of Diana, who died in a car crash in Paris in 1997, aged 36.
Princess Diana's legacy
Princess Diana welcomed sons Prince William and Prince Harry during her marriage to the then-Prince Charles, who is now married to Queen Camilla.
© Gorringe'sShe was renowned for her charity work and was often called the "people's princess" for her close relationships with those she met.
Last week, rare photos from Diana's schooldays in the 1970s were unveiled as part of an auction. The Princess was seen during her time at West Heath Girls' School in Kent between 1973 and 1977.
They included pictures of her in her school dormitory and hanging out with friends in the sun.
Albert Radford, books and manuscript specialist at auctioneer Gorringe’s, said: "Diana comes across as deeply unassuming and domestically minded; someone whose real ambition was simply to have a family and take pride in ordinary things."
