In a move that stunned the Royal Family, Princess Diana got in touch with a royal author to collaborate on a biography about her life - and made some explosive claims about King Charles in the process. Prince Harry walked into the shoes of his late mother, Princess Diana, when unveiling his revealing memoir, Spare. The former Princess of Wales was never one to shy away from articulating her feelings, having once exposed her own truths in explosive tape recordings.

She also shook the Royal Family when it was revealed she was secretly working with an author to write a biography about her life. In the publication, she claimed that the then Prince Charles was greatly "disappointed" at Harry's birth, stirring much controversy. Diana was not able to meet up in person with the royal author Andrew Morton so instead she collaborated with him using go-between James Colthurst, who they were both mutual friends with, the Mirror reports.

Colthurst took Morton's inquiries to Diana, recording her responses over hours of tape. These recordings were later converted into a 2017 documentary, with a sequel film in 2023 featuring the frank admission from Diana that Charles had been "disappointed" by Harry's arrival. At the christening ceremony of Prince Harry, Charles allegedly expressed his discontent for not having a girl to Diana's mother, which led to a strained relationship between them.

She recalled in the book : "At Harry's christening, Charles went up to Mummy and said 'we're so disappoin.