The Duke of Cambridge revealed how he tore up the official guest list for his wedding on the advice of Queen Elizabeth II.
Prince William approached his grandmother with the lengthy list of names and told her that he and his bride-to-be, Catherine Middleton, did not know almost 800 of the people they were expected to invite.
"There was very much a subdued moment when I was handed a list with 777 names on -- not one person I knew or Catherine knew," William told TV presenter Alan Titchmarsh for an ITV1 documentary about the queen, which airs in the UK next month.
He added, "I went to her and said, 'Listen, I've got this list, not one person I know -- what do I do?' and [the queen] went, 'Get rid of it. Start from your friends and then we'll add those we need to in due course. It's your day.'?"
The 29-year-old also revealed that on the eve of his wedding last year he got just 30 minutes of sleep, partly because of his "nervousness" and partly from the noise of the crowd camped outside on The Mall, which runs outside Clarence House and on up to Buckingham Palace.
William also spoke about his growing bond with his paternal grandmother, Titchmarsh said in an interview with UK TV guide the Radio Times.
"We're definitely a lot closer than we used to be," the Prince told Titchmarsh. "I think being a small boy it's very daunting seeing the queen around and not really quite knowing what to talk about or what to ask her."
He went on, "I think over the years that's got a lot better. I've grown up -- hopefully -- a little bit and tried to understand a bit more about her role and my own role."
The future king added, "There's not much wriggle room left for me to try and find my own path but I will do. It's just a matter of learning what's gone before me ... I would like to take all of her experiences, all of her knowledge and put it in a small box and to be able to constantly refer to it."