The Significant Other Mattie Midi Dress is crafted from printed mesh with a fully lined power mesh interior, featuring a ruched bust with underwire, beaded detailing, and a striking front cutout. The Significant Other Mattie Midi Dress is crafted from printed mesh with a fully lined power mesh interior, featuring a ruched bust with underwire, beaded detailing, and a striking front cutout. Founded in Australia, Significant Other was created as a beach-to-bar brand for the laidback, fun-loving, and always on-trend modern woman.