Heh. That's the Original Huntress Mk II Costume which has since been retconned into the Second Huntress Mk II Costume with the introduction of the cool black-and-purple-bodysuit one. That was back when she was still a relatively generic rape victim hero operating out of New York and not really associated with Batman, and was in fact part of the effort that slowly started to coalesce her into something more distinct (the Robin/Huntress mini and a few Showcase stories happened around this time as well IIRC).