It comes after Prince Harry claimed that William was jealous of his beard, and the fact he was allowed to have facial hair at his wedding to Meghan Markle, whereas William was not.
Meanwhile, Prince Harry and Prince William's former hairdresser Sam McKnight issued a message to the Duke of Sussex this week, relating to his recent hairloss.
The 69-year-old - who was a good friend and personal hair stylist to Princess Diana - shared a recent snapshot of Harry taken at the Invictus Games, highlighting his diminishing top, and urged him to go for a hair transplant.
When William found out he had been granted permission, Harry said he "became livid" and claimed his older brother said: "You put her in an uncomfortable position, Harold!
After he'd come back from an assignment with Special Forces, Willy was sporting a full beard, and someone told him to be a good boy, run along and shave it.
