I know the rule is "sides of the breast", but the picture shows the entire breast covered, right? Well, I saw a couple costumes during the con weekend, and am seeing more cropping over in pictures of about four inches of underboob or massive amounts of sideboob. This included watching one cosplayer turn to the point that both her nipples were out... more than once. I'm normally not one to get angry about this (like I hate dress codes in general, but that comes from a bad one from high school), but it seemed highly inappropriate.
Also, don't want to post pictures and call out certain cosplayers. The outfits are all really recognizable.