Delia’s cotton dress size small. Back opening

Super cute navy dress by Delia’s size small. Sleeveless, lighter weight cotton blend. Crewneck, elastic waist band. The back of the dress has a low back opening where are the skirt and the top of the dress combine. Very flattering on. Measures 13 inch chest unstretched, 33 inch length, Waste 11 inches unstretched. Back opening is approximately 5 inches. Still modest