Black all lace sweetheart neckline cap sleeve peplum dress size small

Black all lace sweetheart neckline cap sleeve peplum dress size small no size or brand but it’s small. I’m thinking about size 4. Has a v-neck in back and sheer lace on top Measurements are underarm to underarm 16” across, shoulder to shoulder 16” across, waist 26”, length 55 1/2”. Wedding black tie special occasion prom homecoming vintage look