Leighton Meester visited The Late Show With David Letterman dressed head to toe in designer duds. She has Lanvin to thank for her asymmetrical top and black pants, Louboutin for her fabulous metallic shoes, and Vuitton for her clutch. Although Leighton's exact ensemble isn't available online at the moment, you can shop similar items to mimic her look here.

Source: WireImage