Ah, BUT. I have a on the knee-length denimy skirt from Per Una. It's a back fastening, no pockets and very thin fabric dark blue denim with light blue denim polka dots. It is slinky as hell, goes with everything and I never fail to pull get compliments wearing it. So it is all about the detail.
That skirt is about ten years old, mind. Per Una seems to have aged a lot faster than I have.