Yeah because we need iconic superheroes to look like "real people." That's why Gal Gadot was cast as Wonder Woman right?
https://pbs.twimg.com/media/CnF0QjWW8AAy8wy.jpg:large
Okay, fine. Let's pretend the "real" version of Wonder Woman in the DCEU doesn't look like a goddess for a second.
What about all the animated and comic-book versions of Wonder Woman that look like this?
https://thanley.files.wordpress.com/2015/10/janww48.jpg
http://cdn1-www.afterellen.com/assets/uploads/wonder-woman-movie-diana.jpg
Wonder Woman's face isn't even remotely similar to her character's original design...
https://i.ytimg.com/vi/eBLZ7LOoW9o/maxresdefault.jpg
There is a huge difference between the quality of Wonder Woman's face and Supergirl's.
http://totalgamingnetwork.com/attachment.php?attachmentid=6019&d=1465694205&stc=1