Yep.
Are you basing that on the Batman Year One comic stories? (Selina Kyle being a prostitute)
And IMO, its a really bad idea to give the Riddler a whole outfit. Maybe the hat and tie, and the cane, but a green suitwouldn't translate well in a Nolan movie
Totally agree with this. I think a full out Riddler outfit would not be fitting in this setting.
