Cheeky.

While on their recent royal trip to Belfast, Kate Middleton swapped her heels for trainers as she took to the field alongside husband, Prince William, to play a game of football with children from the Irish Football Association of Northern Ireland's Shooting Stars program. The game took place at the Windsor Park Football Stadium and the programme is to encourage more girls to take part in sports - something Kate and Will were all for even though, Kate revealed that football isn't her strong point. According to The Telegraph, before taking to the field, Kate told the children that her son mocks her football skills by saying: "Mummy, you're so rubbish" and then continuing by telling them that she agrees and she probably should have "picked up some tips from George" ahead of the game. But this wasn't the end of the mockery for Kate, who was jibed at by her husband, Prince William, shouting at her "come on superstar" followed by telling the children to "look out, she goes for the ankles". Like father, like son, eh? Prince William on the other hand (who seems to consider himself a football pro) revealed he could have "stayed there all day". Well, they both look like they had fun, that's for sure.