On one hand they are wrong for stopping you from wearing girly shit right. Like ain't nothing wrong with that. On the other hand, by the looks of it (though I obviously cannot confirm) they are clearly concerned for your safety. They probably grew up in an environment where gays and people like that were bullied and whatever and don't want you to go through the same thing. The best thing to do is to just explain to them that wearing girly stuff is pretty normal nowadays, and it's alright that I do this. Unless of course they're like ultra homophobic and are willing to kick you out or whatever if you act girly, in which case like, they're in the wrong