I have a 3 year old boy who has recently begun to cry and get upset when I'm dressing him in his nursery uniform. He says he looks stupid and he hates it. He gets really quite animated about his appearence. He used to be ok at nursery but now he cries when I take him in. The uniform has a yellow jumper so I used to think it was just a colour thing... But lately he's really getting upset if I even mention the uniform! Is this just a 'style' phase or could it be him associating this with something he's not happy with at the nursery?