So I accidentally bought a swimsuit of the wrong gender that I can't equip.
To get rid of it the only thing I can do is drop/discard it. However, I can drag and drop the item, it won't let me, if I try right clicking it the discard option is greyed out. I have no way to get rid of swimsuits that I can't equip.

For now they are place in my armoire at the inn. A second problem I'm having is that I was able to put most swimsuits that I own in the armoire, however when selecting stuff to store in it, some of the swimsuits don't show up so some of them I can't store in the armoire at all.