As I read these replies I thank God that I have been able to have my horses on property (even if it was humble property) with me over the decades.
It sounds like way too many have nothing to do but nit-pick. Who cares what someone is wearing as long as they are caring for their horse(s) and doing the best they can. People should be supporting others' efforts but sadly that isn't what happens sometimes. I hate petty herd mentality.
I no longer show. My horse activities center around trail riding. Most of the trail riders I know don't give two hoots what someone's fashion (or lack thereof) is...just as long as they aren't "nekked."
Side note: A couple of years ago a group of us were camping at our favorite camp. A group of ladies from a local saddle club came in for a couple of days. One evening they had a potluck and they all really dressed! Best shirts and hats...they looked good. We all so enjoyed the fashion show. I can tell you none of us looked nearly that good.
If you ever find yourself in a fair fight, it's because your tactics suck. ~ Marine 1SGT J. Reifinger