The second in line to the throne spoke about his nearly two-year-old son George and daughter Charlotte, two months, in a new interview with BBC News conducted as he starts his new job as an air ambulance pilot.
When asked what life had been like since he and wife Kate had brought Charlotte home from the hospital in May, he said: "It's been obviously fantastic and she's been a little joy of heaven but at the same time it's more responsible looking after two little ones, especially when George is around: he's a little monkey!
"But it's fantastic having a lovely little family and I'm so thrilled. Catherine has been doing a wonderful job as a mother and I'm very proud of her."
As for whether it was hard saying goodbye to them when he left for work, Wills simply said: "No more difficult than anyone else has to do."
William began his new job as an air ambulance pilot this morning. He reported for duty at Cambridge International Airport at 7am. He'll be working on a rota with four days on, four days off and serving Norfolk, Cambridgeshire, Suffolk and Bedfordshire.
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!