
1) Formal wear
Found on
https://www.crosswordclues.com/clue/backless-dress

A backless dress is a dress designed to expose the wearer`s back. A backless dress is most commonly worn on formal occasions or as evening wear or as wedding dresses and can be of any length, from a haltertop to a miniskirt-length to floor-length. == Evolution == Backless dresses first appeared in the 1920s. In the 1930s, the style became associa....
Found on
http://en.wikipedia.org/wiki/Backless_dress
No exact match found.