Vintage designer wedding dress

Elegant, boho gown feel. Garment is two distinct layers... slip not attached. Great for a wedding (as bride or guest!) or any formal event in hot weather. Tag says S but fits loose. Could work for size 6-8 or a busty 4. I’m a 4-6. It’s from a small boutique in California. Materials not listed on the tags, but lovely and delicate. *update* I recently snagged this piece on some velcro created a small tear half the size of my pinkie nail, as shown in last pic. Does not show when wearing garment.