Interesting--those are very different shapes.

Another thing that has me suspicious that my pelvis is "abnormal" is my seriously tilted uterus, endometriosis, and inability to successfully use menstrual cups (I tried 2 reusable ones and the Instead disposables. All were uncomfortable and leaked...actually, the insteads were comfortable, just useless). Stuff just doesn't fit right. My mom and sister have the same issues. We're all bubble-butted, too (as is my brother).