The Duke of Cambridge says he expects Prince George to be "bouncing around like a rabbit" as the family prepare for their first Christmas as a foursome.
William, the Duchess of Cambridge and their children George, two, and Charlotte, seven months, will honour tradition by going to church on Christmas Day, before watching their eldest "try to tackle his presents as he tries to unwrap them".
The Duke said he foresaw a few sleepless nights, joking: "Well, if I get any sleep on Christmas Eve it'll be good, because George will be bouncing around like a rabbit.
"I think George will be extremely bouncy this year because he's suddenly worked out what Christmas is all about. So that will be two children, one who suddenly appreciates Christmas, which could be quite challenging. But I'm looking forward to it.
"It's a very different experience at Christmas, having a family of your own."
The Prince also showed his romantic side, revealing his Christmas wish is for people to "have some love in their lives" and for snow on the day itself.
He made the comments during an interview for Big Issue with an aspiring journalist he met in a Centrepoint hostel four years ago, when she was homeless.