Vintage 90s dress Small XS black floral midi rayon lacing buttons short sleeve

I bought this vintage 90s dress for myself, but it ended up being too tight across my shoulders (my shoulders are slightly broad for my size). There is lacing in the back so it could fit between an XS/S or 2-6 in modern sizing. Check the measurements please. Great vintage condition, gently worn with no flaws I can see. Just washed. Details: - midi dress (it’s more between a midi and maxi depending on your height, I am wearing it in the photo and I’m ~5’6”) - Black dress with white floral print (it is a true white, the pictures don’t show how bright it is) - covered buttons all the way down front - adjustable lace up detail at the back - Retro woven lattice design at neckline and short sleeves - Square neckline - 100% rayon (very soft and flowy, similar feeling to cotton) - unlined - brand is Pellini dresses Measurements are approximate and taken flat with the back lacing undone. Shoulders: 15.25” Pit to pit: 17” Waist: 15” Length: 48.5” Tags: vtg, flowers, sundress, summer, vacation, pretty, comfortable, effortless, 1990s, 40s, 1940s, short sleeve, fitted, Christy Dawn, Gala Paris