Stunning strapless evening gown from COAST

Stunning strapless evening gown from COAST in a deep purple, the material is 67% acetate. 25% polyamide and 8% elastane, contrast is silk. Fully lined, was worn once. The bodice is lightly boned and the material is draped, which gives it a classic Roman/Greek look.
armpit to armpit 42 cm, waist 34 cm, length 130 cm
only worn twice, Very minimal signs of wear, I couldn't notice any but since it has been worn, I rather put that in.
While it is labeled as a UK 10 French 38, it comes quite small, more like a 36, please see the measurements