This isn't a very good analogy (bolding mine). If I made a list of foods that will best help my children have healthy bodies, jelly beans and McDonalds probably wouldn't be on it. However, in my list of lessons, guiding principles, and characteristics that will best help my children become good people, what they wear isn't anywhere close to being part of it (this applies to both my son and daughter). That my three year old son likes to dress up in fairy clothes will have no bearing on the man he will become.
OP: I wouldn't worry about your son or what others think.
EnviroBecca: I LOVE your son's preschool teacher's response. She sounds like a gem.
Anyways, I wish threads like these would specify *support only* if that's what they are seeking. Instead of leaving it open ended for all input, but only wanting support. Which is fine! Just warn people that you don't really want an opposing view point. K unsubbing *again*