XD I was partially being facetious, and partially being honest. It might not be 'uncommon' now, but in the long run women in comics are generally heels girls.
But you're right! I had forgotten about Catwoman's outfit.
Harley's shoes are actually flats, or have a SLIGHT heel. I had to go check Ivy's footwear again, since a lot of the pictures totally cover up the feet, but heels on her and Selina.