Re: how can i convince her
Oh lord, I would have given my left arm if my old school would have sent their uniform policy to hell. Not only did we have weekday uniforms, but gym uniforms too! Yellow and green...at recess (this was elementary school) we all looked like a bunch of lemons and limes out in the schoolyard X)
Tell your mom that you want to express yourself. I do, and my mom, who isn't lenient about too much, allows me to wear guys clothing adorned in dragons, snakes, spiders, flames, daggers, and so on. I also wear jeans with straps across the back and huge HUGE leg openings.
I've seen kids about my high school wearing fishnet shirts like the one you described...and they wear a tanktop under it. We have a rule against belly a.k.a. "midriff" shirts too, but that doesn't stop nearly every female in the school from wearing them. So I say go for it. Don't let parents be the judge of what you wear. Best 'o luck.