Fatherhood made Prince William emotional
The Duke of Cambridge says he is more emotional since becoming a father
Speaking during a documentary about his father's Prince's Trust, he said he cries more often and finds himself worrying about "not being around to see your children grow up".
The Duke, who lost his mother Diana, Princess of Wales when he was 15, said he tended to “well up at the smallest little things” after the birth of his children Prince George and Princess Charlotte.
Speaking to Ant and Dec, William said: "I'm a lot more emotional than I used to be, weirdly. I never used to get too wound up or worried about things.
"But now the smallest little things, you well up a little more, you get affected by the sort of things that happen around the world or whatever a lot more, I think, as a father.
"Just because you realise how precious life is and it puts it all in perspective. The idea of not being around to see your children grow up and stuff like that".
Prince William was speaking alongside his brother Harry.
The royal brothers shared memories of the Prince of Wales and the Duke of Edinburgh ruining school plays for them by laughing in all the wrong places.
William told a story of how his father convulsed with giggles when a pyrotechnic explosion went off at the wrong moment as he was playing the role of narrator in a Christmas play.
The Duke said about his father: "He couldn't stop laughing the whole way through the production."
He added: "Several times I'd stop ... I'd cast an eye across, like you know, a big death stare, and then I'd try and get back to my lines, it was terrible".
His younger brother said when he was in a separate school play: “There was a particular scene that he found very amusing, much more amusing than the rest of the audience, it wasn't funny, no one else was laughing".
Ant and Dec spent a year shadowing the Prince to find out about the work of the Prince’s Trust.
When Ant & Dec Met The Prince: 40 Years of The Prince's Trust will be shown on ITV1 on Monday, January 4 at 9pm.