Probably one for AIBU but ... Dp wears tee shirts with images on - as in like Marvel Comic characters. I have never liked this tbh but lately it's started to irritate me to the point I'm wondering if it's about to trigger the ick. If I'm honest, I think it's a tad puerile. He's 40. I'm 46.
Now, I'm someone who just doesn't do this and never have. I don't see the need to parade that I like a brand or tv/film or for it to define me in some way. I don't buy branded clothing either where the brand name is highly visible.
Of course, he can wear what he wants. I still don't like it. I suspect he's never going to stop and (in my mind) 'grow up'. I suspect, too, I'm being unreasonable to be irritated.
I never say anything to him though I do tell him when I think he's looking nice (and invariably this is when he's wearing plain tee shirts).
So, to gauge the extent of my own (possible) unreasonableness, would this irritate you in a relationship?