It Is Fine To Wear The Shirt Of The Band You Are Seeing In Concert

Damnit, I will die on this hill: it is perfectly fine to wear the shirt of the band you are seeing in concert. Like, why wouldn't you wear a Metallica shirt to see the Blackened ones? I don't know who made up this stupid concert "rule" but I'm over it.

I have lots and lots of band shirts. There are definitely shows where I go out of my way to wear a shirt in support of the band.

Is the whole goal here to brag and show off all the band shirts a person owns? Like, what is the point? As for the cartoon below, yes, I've been that person sifting through 15 different black shirts just to pick the "right" one.