Um, I met Crystal at a 'fancy dress' party. Well, it was sort of fancy dress; you were supposed to dress like your nationality which left me in a cute white sundress and a red cardigan. I stopped just short of drawing a big maple leaf across my face (though I probably would have if I'd thought about it at the time!) You never know where you'll meet someone, eh? It was definitely not a 'jeans and minimal makeup' event for me.
I think the best thing you can do is dress to reflect yourself. Don't put on anything (or buy anything) that you don't love. If you let yourself shine through, you'll never run into issues like that, right?
You can't change what the whole world does, you can only change yourself and hope you act as inspiration for others to be themselves as well.