Here is what I have learned about vaginas:
I spent this past semester in labor and delivery. I dont have siblings and I have never witnessed a vaginal birth in person much less have time to stare a a woman's vagina for any length of time. I had C-sections and didnt stare at my vagina much either.
One night at clinical, I was being tossed around to different nurses (so I could see as many births as possible) and I spent the night helping two different women labor. The first was a very petite Asian lady who laboring with no medication. She was 100 lbs dripping wet. I helped hold a leg while she pushed and pushed and pushed. I had lots of time to gaze upon the whole area... She was so petite including her vagina. I was amazed at how small it was-- the labia, vulva etc. Even swollen and with a head crowning... she was still petite.
The other patient was pushing 300 lbs and had a very good epidural. So good that I had to help hold a leg because she had no feeling or control. She also was pushing pushing and pushing. So I was gazing upon her area as well. My mouth almost fell open because her vajayjay was ginormous!!! Her labia had folds upon folds... Her mons pubis was vast and padded with fat.
I had an epiphany that night... I know when people are overweight- things get bigger like legs, butt, arms etc ( I am overweight so I can say this). I just never thought about the outside of the vagina getting bigger!! I guess because men's penises dont get bigger when they get overweight... I dont know... And the next time I was in lecture with my maternity professor, I enlightened her of my epiphany. I have never seen her laugh so long and so hard.....