You don't. You are a child still and they make the rules you must obey. Nobody cares what other girls are wearing at school. They have horrible parents who don't care that their daughters are already acting like and may already be $luts. There is no reason for you to dress that way unless you are one too and want the wrong kind of male attention. Don't even try to deny it. It is the only reason women dress that way from an evolutionary perspective, to get a males sexual attention. You are only 16 and should be focusing on school, not getting that kind of attention. Also, you are at a school music event. The music should be the focus, not your rampant narcissism and desperation to get sexual attention from all the males in attendance. If there were no males there, only females you'd never think of wearing it, at least admit this truth. Its about men and nothing to do with what other girls are wearing. You are all competing for their sexual attention because you want it. Ignore your parents rules, become a cheap $lut behind their backs, you will only hurt yourself. You will never be worthy of a good mans love and you will end up used and discarded like a cheap sofa on the side of the road. This is what happens to every used up skank and each one thought she'd be different. Men will never respect you when you do not respect yourself. Act like a sexual object in public and that is the only thing that you will ever be seen as. It doesn't matter how much of a progressive or a feminist a man pretends to be around you. That is all he will see you as too and you will never be considered quality gf or wife material. Just good for a quick pump and dump, never anything more.