Batman Confidential — DC Comics
Issue: #18
Batgirl tracks Catwoman and the notebook stolen from Commissioner Gordon to a posh nightclub — where costumes are optional!
Creators: Mike Carlin, Kevin Maguire, Fabian Nicieza, I.L.L., Tom Palmer Jr, Sal Cipriano
Characters: Catwoman, Barbara Gordon
Story arcs: The Cat and the Bat