My mother in law just sent me a photo of my son dressed in a dress and with his hair tied up for fun. I am quite upset about it but my friends are telling me it's ok. Do you think it is wrong for her to do that?

If this is a one off occurrence, i wouldn't make that much of a big deal about it. I would still talk to my mother-in-law about the fact that although it is a funny picture she shouldn't have the intention to keep doing it as it my adversely impact my child's self image.