There are so many great cosplayers out there that it's hard to leave anybody else, and in the case of Linda Le, it would have been criminal. Here she is styling out her take on the Nightwing costume (or one of them, anyway). Most comic characters that have been around for more than a couple of decades have been through at least one or two redesigns, but the version that Le used for inspiration came from the world of videogames.
Nightwing and Batman are intrinsically linked. Nightwing is Dick Grayson, who actually filled in for Bruce Wayne under the bat-hood for a while when Wayne needed some time up. That meant Nightwing appeared as a character in the 'Arkham Asylum' game, and this is the outfit he was wearing when he did. Needless to say, it looks a lot better on Le than it did on a digital man.