Is This Fair?

Is not being abole to where a tank top fair? Some may say so, but I say differently. I agree that a scrawny spaghetti strap is inappropriate, but if not, why dose it matter? I also agree to you're tank top not being a color so light that you can see through it, but why can't you where and appropriate one? They say that's its too much skin showing, then again, is showing you're arm inappropriate? It's like someone saying out on a hat, you're hair inappropriate.