Prince William was once mocked by Eton schoolmates over the size Princess Diana's breasts after topless photos of her were published, according to reports.
According to the soon-to-be published memoirs of Nicholas Coleridge, the chairman of Condé Nast Britain, the late Princess of Wales told him the teenage heir to the throne was "upset" by the ruthless teasing.
Diana was photographed as she sunbathed topless on a Spanish balcony in 1996.
Mr Coleridge, chief of Vogue, Tatler and GQ magazines, wrote about a fateful lunch date with Princess of Wales at his office, a year before her death.
He wrote: "The princess arrived and looked fabulous... 'Nicholas, can I ask you something?' she said. 'Please be truthful. Did you see the photograph of me in the Daily Mirror? The topless one?'
"'William rang me from Eton. Poor boy, he's only 14. He was upset. He said some of the other boys were teasing him, saying my t*ts are too small...
"'Nicholas, please be frank, I want to know your real view. Are my breasts too small, do you think?'"
The magazine boss said he assured the Princess that her breasts "seem perfect to me," to which she replied: "Thank you, I feel better now."
Mr Coleridge, now 62, added that he became "breathless" and "as red as a guardsman's tunic" when Lady Di asked her question.
His book, The Glossy Years, will be published in the UK on September 26.
