DION LEE - Mobius Halterneck Gown The Mobius gown from Dion Lee is made in a silhouette with a self-tie halter neckline and ruched-detailing at the bodice. The long-sleeved style features a deep slit at the neckline and a high-cut slit in front. Size 6 Australian (US 0-2) #dionlee #blackdress #dress #formaldress