It could be regarded as the chastisement of hubris.

Yesterday, as he made doughnuts with a class of deaf school children, the co-founder of his charity, Prince Seeiso of Lesotho, poked fun at Prince Harry, asking the class to teach him the word for "redhead."

Harry shot back: "What about the word for bald?" pointing to his friend's head.

Now, however, fresh evidence emerges that Harry could soon be ginger and bald.

Treasonable suggestion it may be, but the latest photos do suggest that Prince Harry might be developing a bald spot like his elder brother.

A close scrutiny of the Harry pictures from Lesotho yesterday does appear to back up scurrilous suggestions that scalp is starting to peek through the otherwise luxurious mane of the royal redhead.

Prince William’s bald spot has been an ever-increasing patch of desertification. Harry’s father Charles, and uncles Andrew and Edward have all had to cope with significant hair loss. So although pattern baldness may be in prospect, there is a silver lining; this should put an end once and for all to the nasty paternity rumours.

Prince Harry left Lesotho last might and travelled to Johannesburg, where he paid an emotional tribute to his mother, saying  he hoped that Princess Diana would be looking down from above and be “proud” of the work his charity Sentebale has achieved.

He was speaking at a gala dinner marking the launch of plans to build a Mamohato Centre for children and young people - named after Sentebale's co-founder Prince Seeiso’s mother Queen Mamohato Bereng Seeiso.

Harry said: “I hope she would be proud of what we are trying to achieve in her name. I hope that my mother will be proud, too. Maybe, just maybe, they are together somewhere up there, with blue prints and sketches already mapped out!

“I can only hope we put the swings in the right place.”

The 250-plate dinner dinner kicked off a £2.4 million fundraising campaign to build the first permanent centre for children and young people infected with, or affected by, HIV and Aids in Lesotho.