Vintage House of Bianchi Spaghetti Strap Slip Dress- Tomato Orange Red - Small?

Vintage House of Bianchi Dress Spaghetti Strap Slip Dress Tomato Orange Red Dating the dress isn’t simple as they were often made to order. It appears there was a care or size label once that’s been torn out, so it’s possible it was retail. Given the label pictured, 70’s 80’s feels right. No size label but measurements are 47” length; about 17” under arms; and 13.5” at the waist. Seems to be polyester or poly blend.