File photo - Princess Diana and Prince Charles, with their sons Prince Harry L and Prince William, stand outside Buckingham Palace August 19, 1995 during Britain's VJ Victory over Japan Day commemoration service Reuters .

Letters sent by Princess Diana to a Buckingham Palace head steward reveal that Prince Harry was "constantly in trouble" at boarding school.

Diana sent the six handwritten notes - which are expected to sell for thousands of pounds at auction - to Cyril Dickman in the 1980s and 90s.

In one of them, sent five days after Harry's birth in September 1984, Diana said it had been a "particularly happy time"

She added: "William adores his little brother and spends the entire time swamping Harry with an endless supply of hugs and kisses, hardly letting the parents near!


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