To answer what costume the Catwoman will be wearing is like trying to make an apple pie from scratch. YOU HAVE TO CREATE THE UNIVERSE FIRST. In her case, her ORIGIN.
Is she going to be a cat thief?
Is she going to be a gang turf protector?
Is she going to be a hero?
She could start as the girlfriend of a crime boss and be an executioner/torturer for-hire for the mob FOR ALL WE KNOW!
So many different functions. For all those things, you need different suit protection, different tools, different boots, different FABRICS, different SEXY POINTS in the suit. Ok some things like a tight ass and some cleavage are the same everywhere, so is the whip.