Natalie Portman rocked a black Lanvin for H&M mini-dress at the Gotham Independent Film Awards.  The actress wore the one-shoulder dress on the red carpet last night in New York City.  She accessorized with a small jewel encrusted evening bag and a pair of black suede high-heeled pumps.  Her lips were a bright fuchsia lipstick color and her hair in an intentionally messy side bun.  It was a good choice and a good look  for a more informal event.