VTG LILLI DIAMOND of California lace cocktail dress

Rare & unique vintage 1950s semi-formal party dress from Lilli Diamond of California. Black scalloped lace top with light boning over hidden bustier. Satin skirt with pleated drop waist. Hidden back zip. No fabric label, feels like silk or poly. Unlined. No size tag, please see all photos for measurements. Seems to fit like a size L. Great vintage condition. Minor faint spots at waist, some loose stitches under pleats (see last photos). Not noticeable when wearing and easy to clean/fix.