That is the white silk-linen underdress I made when in Tassie, so you must have seen me wearing it. It has a silk warp and a linen weft. I stitched it using very tiny stitches, using threads unravelled from the fabric. Where the stitching parallels the silk, I used the silk thread, and where it parallels the linen I used the linen thread. I'm very fond of this one. But I'm thinking of re-doing the sleeves--they are rather lose in the upper arm, which is fine for when wearing a loose sleeved over tunic, but the tunics I've been making lately are much more fitted, so if I wear it with them the white sleeves poof when they get past the narrow sleeves of the overtunic and it looks silly. Or, I could just make a whole new white underdress with narrower sleeves, I suppose.