The book also reportedly claims Prince William and Princess Kate branded the South Park episode mocking Harry and Meghan “hilarious”.
According to the leaked extracts, Charles is portrayed as a “pampered” royal living an “extravagantly luxurious lifestyle” — including having his shoelaces ironed for him, it was reported.
The book reads: “When laces get even the smallest bit threadbare, a staff member must quickly switch them out with a fresh, ironed pair.
“There is even a rumour (one that, surprisingly, sources have confirmed) that Charles likes to have someone squeeze exactly one inch of toothpaste onto his toothbrush for him ahead of his bedtime routine.”
Meanwhile, a royal author has slammed Scobie’s claims that William and Charles are “at loggerheads.”
Phil Dampier said: “It’s totally rubbish to suggest William and the King would ever be at loggerheads.
“They’ve grown incredibly close and there is no way in which William would do anything to undermine him.”
The Duke and Duchess of Sussex have distanced themselves from the explosive book and said they are not “affiliated” with it.