Fatter(there's no better way of saying it) women are generally meant to have smaller vaginas. That's due to several other organs being squished about. Surprisingly, slim, petite women are often able to easily accommodate more, as has been discussed on other threads on this site.
Any quote by any doctor, medical or advice forum, or service, stating that all vaginas are about the same size, or elastic, however - is complete bollocks (waits for head to be slapped).
To my certain knowledge at the start of the year, the only vaginal lengths measured by bodyscans only involved a maximum of 17-24 participants, all within the same area, & age range.
If anyone on the site can provide any MRI or other bodyscanned scientific research of vaginal length(reposed or otherwise), based on height or weight, or anything, from a decent sample size (several hundred) - I' be grateful, because everything we have seems just to be shit really.
I looked into this a lot 9 months ago - & 24 people doesn't sound like a representative sample to me, especially when current medical advice tries to sound certain on the basis of, well, nothing.
There's a wealth of measured accurate information on dick size - & bugger all on vagina size, length, girth & capacity. Perhaps someone on LPSG could do their PHd on this!
How many children has she had is more germane than how long her legs are. Also how well-developed her muscles are in the area will affect how tightly she can grip your penis, if she is so moved...
Lol. Why wouldn't she? What's the point otherwise?!