I'm going to go ahead and third SigmaJoy, also, and DITTO to everything UCLAgirl said.
I absolutely understand that sororities want to upkeep a certain image. I don't think there is anything wrong with that! But if this girl is really, truly wonderful, then you ought to extend a bid. After all, when you're in the middle of a huge crisis, lying on the floor in a puddle of tears, you're going to take alot more comfort in her warmth and humor as opposed to luscious blond tresses or icy blue eyes... Don't you think?
As a PNM, I really want to be part of a group that's full of vivacious, talented, intelligent young women... and if the majority of them are good looking, well, that's just gravy, isn't it?
XOXO,
Annie.