1929 21 Mar. ii. 10/4 Stores which have given considerable attention to featuring low-backed foundation garments with the sun-backed frocks report much bigger responses.
1954 18 June 14/1 All of your cottons will be all right, unless they are flagrantly sun-backed.
2007 V. O'Connor xii. 173 Cyd returned in her cute sun-backed dress.