I see no problem in her running as a prom king. I mean, she might look hotter than all the guys... It's possible. It's just about looking good, and in what style you're dressing. Noone can see a penis or a vagina through the cloths anyways, assuming noone is having a boner (and if you're not extremely well equipped
) So in that case I think all girls could run for prom king, as long as their dressing like the typical one.