Britain's Prince William slept for "half an hour" before his wedding to Duchess Catherine.
The second-in-line to the throne revealed a mixture of nerves and singing crowds outside Buckingham Palace meant he found it nearly impossible to get a full night of sleep prior to his nuptials to Catherine -previously Kate Middleton - in April 2011.
He said: "They were singing and cheering all night long, so the excitement of that, the nervousness of me and everyone singing - I slept for about half an hour."
However sleep was not the only problem the prince had before his marriage - he had to go and speak to his grandmother Queen Elizabeth when he was given a list of names of planned attendees, none of whom he knew.
He added in an interview to be aired on TV show 'Elizabeth: Queen, Wife, Mother' on Friday (25.05.12): "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.
"I went to the queen and said, 'Listen, I've got this list, not one person I know - what do I do?' and she 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.'"