Blake Lively appeared on “The Late Show with David Letterman” to plug her new film, “The Town.”

She flaunted her toned legs wearing an Elie Saab Fall 2010 mini dress as she made her arrival at The Ed Sullivan Theater in New York yesterday.

The black sequined figure-hugging dress with 3/4 length sleeves has cut-out details around the shoulders.

It’s a fab dress, perfect for someone with a figure like Blake’s, but the hair is a blah for such a great dress.

She accessorized with Charlotte Olympia which have Plexi glass heels and a chunky ring.

Credit: NYMag & Fame Pictures