Similarly one may ask, should you wear band merch to a concert?
Long answer: YES! “You don't wear a band's shirt to their concert.â€
Subsequently, question is, what percentage of concert attendees buy merch? Most artists receive a percentage of the sale of their merch - around 30% or so is pretty common, at least in the US, though the rate can fluctuate depending on your star power.
In this manner, is it weird to wear a band shirt to a concert?
The gig is the one place where you metal fandom is accepted and normal. Not wearing a band shirt is what seems odd. However, in the realm of indie culture — where looking like you're trying too hard has always been a magnet for mockery — it does seem like this unwritten rule still has some sway.
What do you wear to a Kiss concert?
Play it safe with a white, black, non-KISS band, or logo tee. Keep it all casual with a leather or industrial-look jacket. Even if you're not going for a mosh-pit, head-banging, freestylin' experience, your KISS concert outfit should keep you on your feet and active.