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?

I think it's not appropriate. I will not allow anyone to dress my son in girl's clothes. I believe that the experiences that children go through during their childhood are crucial to their future development and have direct impacts on their characters. Moreover, it may embarrass the boy if he or his friends realized that there is a photo of him in girl's clothes. If I'm in your shoes, I'll let my mother in law understand my view and advise her to delete the photo and not to do it again.