Supergirl reminds me of an actress I saw a while back. Can't remember who it was.
Harley looks like Miley Cyrus. No, seriously. Try picturing her with her tongue sticking out. It's the same thing.
Diana looks like... I don't know, Michelle Pfeiffer, I guess?
Ivy looks like that blue eyed chick who was in those shitty Percy Jackson films and is in the new Baywatch movie.