Paul, 59, reported live from Windsor today for ITV show Lorraine.
In the coverage of the event, Princess Diana’s former butler reflected on what Prince William could include in his wedding speech for his brother Prince Harry ahead of tomorrow’s Royal Wedding.
Paul was certain William would be mentioning Harry’s notorious antics, like when nearly-nude photos were leaked of him during a Las Vegas getaway in 2012.
He also said there would be a lot of “pressure” on the heir to the throne.
Paul revealed: “There will be a lot of pressure around William because it’s time for him to get his own back and time for him to tell everyone how naughty Harry has been.
“We know he’s a naughty boy but I bet he’ll mention in that speech those naughty times in Las Vegas.
“Maybe the naked pool party, or when perhaps Diana brought home some of the most beautiful women in the world to see her boys.
“She brought home Naomi Campbell and Elle McPherson and Cindy Crawford, they all came for tea with William and Harry.
“I mean, he will have a good time with that speech.”
Harry delivered a best man speech for William when he married Kate Middleton back in 2011.
At the time, an attendee told The Mail on Sunday: “Harry said William was the perfect brother. It was exactly how you would expect a best man’s speech to be.
“He cracked loads of jokes about William. He called him a ‘dude’ several times. He kept coming back to it, saying ‘What a dude.’”
Earlier this week, Paul also divulged what Diana’s secret nickname for her youngest son was.
Speaking once again on Lorraine, he confessed how different the two young princes were from each other.
Paul divulged: ”I think watching the young princes grow up was probably the happiest time in my life.
“Harry as a child was mischievous, naughty and very noisy. He was very different from his brother.
“He and his brother were like chalk and cheese.
“Nannies would always whisper in William’s ear, ‘You’d better sit up straight, you’d better behave, because you’re going to be king one day.’
“’I don’t want to be king,’ William said one day. And Harry piped up, ‘Well, I’ll do the job instead of you then.’
“So from that day on, the Princess and I called Harry GKH – Good King Harry.”
Lorraine airs weekdays at 8.30am on ITV.
