Charlie and Lola: Say Cheese! by Lauren Child

Lola has promised her mother that she will stay clean and tidy for school picture day. It will be "easy peasy, lemon squeezy," says Lola. But staying clean and tidy is not so easy, especially when there is finger painting to do and a game of puddles to play. By the time Lola poses for her picture, she is covered in paint and pink milk, and her extremely special photograph for Mom is ruined. But then Charlie has an idea that just might save the day.