Found this outfit at Gnubie Store, made by Hyasynth Tiramisu, the creative brains behind the Silent Sparrow brand in SL. I would not look out of place at a Steampunk convention. This outfit also includes jacket tail and cuff options for male avatars, so it is pretty unisex :).
Skin – Mila (tan) – Deviant Kitties
Hair – Heather (bronzed) – Calico Ingmann Creations
Shoes – O’Brien boots (black) – Indi Designs