Most Helpful Guy
Your choice really! Either wear a band t-shirt or just wear your usual stuff 😊 does your boyfriend's band have any merchandise dedicated to them like t-shirts you can wear to support them? I'd find that pretty cool if I had a girlfriend turn up to one of my concerts
Most Helpful Girl
Whatever you want, all black is the safest and easiest option.
Last time I went to a rock concert I wore red plaid leggings and a black bodysuit top with a deep neckline with a long lace up choker and a pair of black leather boots and a red bandanna in my hair. Was really comfortable too.