1) Black poplin
To note, after wearing this a few times, I decided it needed a lining so I added one cut on the same pattern from some black bemberg rayon lining fabric. Works like a charm.
2) Vlisco wax (now my favorite skirt)
I can't get enough of this skirt! I'm planning to make some shirts just to go with it, brown, black and white. I have a slip that is long enough to wear underneath so it doesn't catch on my leggings, but I might still add a lining. Also, there is a catch around the zipper, where the skirt rides up very slightly in the small of my back. I think I need to make a small swayback adjustment to make this pattern an even better fit. I think the first skirt waistband hiked the skirt up so much that this problem wasn't apparent.