Princess Diana said she wanted the monarchy "to survive" in a newly-released letter.
The late Princess of Wales, who died aged 36 in 1997, wrote the letter to her former butler Paul Burrell, who has now shared the note for the first time.
I'm A Celebrity... South Africa star Paul, 64, was Diana's butler for 10 years said she wrote the message between 1993 and 1997 – after she and the-now King Charles separated in 1992 – which confirms she was a "monarchist".
One section of the handwritten letter, shared with OK! magazine, reads: "I so want the monarchy to survive and realise the changes that will take to put 'the show' on a new and healthy track."
In another clipping from the note, Diana discusses her love for her sons, Prince William and Prince Harry, who has shared a bitter war of the words with Paul in recent years.
It reads: "I am here to support Mama [the Queen] and to bring W + H [William and Harry] up in order to cope with the fast changing world we live in. I love my boys to death and hope that the seeds I’ve planted will grow and bring the strength, knowledge and stability that is needed."
Paul, who's I'm A Celeb antics have been branded 'fake', shared his decision to unveil the letter, Paul said Diana's words are "poignant" 25 years after her death.
"I wanted you to see Diana’s handwriting and her words," he said. "Because they are so poignant at this moment in time, tied into the coronation and tied into the fact she was a monarchist.
"She loved the Royal Family and she wanted the Royal Family to survive. And also, the fact her sons William and Harry were part of this, what she called, 'The Show'."
Paul, who recently revealed a security gaffe at Buckingham Palace, explained how Diana "used to leave notes and letters" for him all the time.
He told the publication: "She used to leave notes and letters for me all the time on my desk. She’d say, ‘Whenever I have a thought and you’re not there I have to write it down otherwise I’ll forget.
"She was thinking about her life and the way forward and her sons and her part in the Royal Family."
Meanwhile the former royal butler and reality star said he thinks Diana would have supported Charles, 74, becoming King and would have attended the Coronation, which is taking place Saturday May 6.
Reflecting on the event, he said: "I always think to myself, 'What would she do in this situation?' And she would have been at the coronation looking glorious, in her sixties, outshining everyone the way she did.
"I don’t think she would hold any animosity at all towards her ex-husband or towards her ex-husband’s wife. I think she would have gone on in life and achieved her own ambitions, still being royal and regal."
