Sia is an Australian singer-songwriter. She wears wigs that cover her face to maintain some privacy and a sense of mystery around her. As a result, her visual identity are the wigs that cover her face. Sia is not a face, Sia is an identity.

Her videos do not feature her most of the time, but rather some other girl. However, the protagonist of the video generally wears the wig too to symbolize her. The videos are strong with elements like a cage, shadow art, etcetera. All these videos convey a story, just like her songs. Each post card is thus a visual interpretation for each of her most popular songs, like Elastic Heart, Alive, Angel by the Wings, Black and Blue, Chandelier etcetera.