A slim midi silhouette boasts full-length balloon sleeves and twisted-front detailing to create an enchanting statement. An alluring open back and center front cutout set the Significant Other Demi Long-Sleeve Column Gown apart. A slim midi silhouette boasts full-length balloon sleeves and twisted-front detailing to create an enchanting statement. An alluring open back and center front cutout set the Significant Other Demi Long-Sleeve Column Gown apart. Founded in Australia, Significant Other was created as a beach-to-bar brand for the laidback, fun-loving, and always on-trend modern woman.