Banana Republic strapless seersucker dress size 4

Banana Republic strapless seersucker dress in navy with peplum accents. Size 4. Purchased at the retail BR store, not their factory store. I absolutely LOVE this dress and would not give it up except that it doesn't fit. 😭 Fully lined. Back vent. Body: 97% cotton, 3% spandex Lining: 100% polyester Dry clean only. Approximate measurements: Pit to pit: 15 inches Waist: 14 inches Length: 28 inches Only got to wear it once. Excellent condition. Smoke-free home.