Amy Rigg Long Dress w Beautiful Buttons

This is a beautifully made, long dress by designer Amy Rigg. The label says the material is 100% cotton, but it looks and feels like heavy linen. We wonder if it is mislabeled (we’ve had a lot of linen pieces in our closet). Much, fine work went into the pleated skirt and hem. The buttons are gorgeous. Sleeves are 3/4 and it has slit pockets. Her pieces are pricey. Size: Amy Rigg size 2(I was unable to find a size chart. Please see measurements) Dimensions: Armpit to armpit 23” Chest 46” Hips 70” Length 47.5”