Significant Other Millie Halter Dress in Black. - size Aus 6/US 2 (also in Aus 8/US 4, Aus 10/US 6, Aus 12/US 8) Significant Other Millie Halter Dress in Black. - size Aus 6/US 2 (also in Aus 8/US 4, Aus 10/US 6, Aus 12/US 8) Polyester blend. Made in China. Dry clean recommended. Fully lined. Halterneck tie closure with bust cut-out. Slinky jersey fabric with front seam slit. SIGR-WD161. SL230773D-BLACK. Significant Other is a stylish 'beach to bar' brand for the modern woman. Natural fibers and relaxed, flattering silhouettes are the benchmark of this fresh Australian label. Driven by a need for well-priced and carefully crafted clothing in the market. Significant Other was born in the design offices of prominent Australian Label, Acler. Acler designers Kathryn Forth and Julia Ritorto form the creative team that is Significant Other.