The Significant Other Demi midi dress boasts full-length blouson sleeves and a twisted-front keyhole detail, creating an enchanting statement. An alluring open back and a slim skirt evoke instant elegance. The Significant Other Demi midi dress boasts full-length blouson sleeves and a twisted-front keyhole detail, creating an enchanting statement. An alluring open back and a slim skirt evoke instant elegance. Founded in Australia, Significant Other was created as a beach-to-bar brand for the laidback, fun-loving, and always on-trend modern woman.