For the event, Portman paired a lace-up corset with a netted skirt, very much indicating that she's a biker chick who will hex your Harley. The velour jacket has a bit of a bomber shape up top, with three-quarter-length sleeves.
Those boots! The buckles! She's a little bit Wednesday Addams, a little bit rock and roll, and she definitely just watched Beetlejuice Beetlejuice, right?
Portman is clearly a big fan of this fabric. At the Deauville American Film Festival earlier in September, she wore a gorgeous, belted dress with puff sleeves and another slightly gothic choker.