Cocktail Dress

EUC. Worn once to a daytime Gallery event. Dry cleaned. Has been in storage & no longer fits. Size 30 which fits size S/6. Laying flat, pit to pit, this dress measures 17" and at the hips 20". There is a hidden zipper on the side (pictured) to be more form fitting. Sleeveless and v-neck. Linned. Noticed light spots with my phone's blue light. Might be lint, don't want to guess. Please see photos. Price reflects condition.