Cosmetic Boundless Helm + Thunderforged Light Armor
Could also add a DDO store bought Black Cloak but I did not have a random gen black cloak lying around to use.
I actually had originally considered the Shadow Dragon Hide first, but found that because of the limited Helmets available that had the "Ears", this caused me to look over to the Black Dragon Hide instead as they (Helmet and Armour) were more closely matched to each other for colour scheme.
Interestingly, if OP is interested in a Batwoman look, there is surprisingly something very viable using the existing cosmetics we suggested:
If you take the Shadow Dragonhide armour, and created a female with long red hair, then utilised the Elite Spider Mask, then add on a black cloak, you can in theory get something fairly close to the Kate Kane Batwoman look.
An example here with the Black Dragonhide (as I don't have a Shadow Dragonhide on quick tap).
Alternatives to Dragonhides are actually the Reaper armours, specifically the classic (blue), purple and red variety. For Batman, Batman and Batwoman respectively.
J1NG