MCR concert outfit? unique but practical...?

what should i wear? honda civic tour, rogers arena (vancouver bc), august 31st. i want something unique and different. i'm 14, blond longish hair, blue eyes, 5'3.5. my style is kinda emoish (i've been told). mostly black and purple. the majority of my shirts are band shorts lol. and i kinda have an emoish haircut. it's eno with my little twist on it. so what do you think would be a good idea for my outfit?