The size tag shows 3x from Shein, which is the equivalent of a size 18. Mock neck with button closure at the back. This is just the sheer overlay, slip is NOT included. Floral vine embroidery over the front. Good condition. Pick up only in Highland Park. Smoke free/pet free home, and all items are laundered (if not dry clean only) in fragrance and dye free detergent for sensitive skin.