Tiziani designs American-born fashion designer Tiziani shows this short evening dress in 1965 Spring-Summer Collection in Rome . Emphasis is put on the back by means of an original triangular decollete whose front is mirrored here . Material used is white " cloque " silk . The sleeve and collar-less garment , rather flat and " sealed " on the front has a beaded belt which crosses a section of the black left bare by the unusual " decollete " . 17 January 1965 Rome , Italy