I have been sly now for getting on 7 years so my 3 year old daughter has only just really registered the fact that she has hair and I don't. So the questions have started, why don't you have hair? Why did your hair fall out? Why did it just did?
The funniest thing though is that she now totally associates hairloss with men and has decided that when she is older her hair is going to fall out and she will be a boy!!
That said, she also wants to be Father Christmas when she grows up.
My daughters are much older, but when they first saw a picture of sly dad, their responss were "EEEK" and Oh, my" respectively. I think they are used to it now.