Attached Link: http://www.portrait-artist.org/misc/proportion.html

"...and make additional proportion comparisons."

No need for that. Others have already done it and ArtyMotion is perfectly right.

AVERAGE size for a women is betwen six to seven heads lenghts. (See link)
Eight head lenghts size is for fashion models (or comic book Superheroes).
So Vickys proportions out of the box are maybe not downright impossible, but definitly way beyond average.
(To be honest, once you notice it, she looks pretty ridicoulus) :-)

So I usually adjust my characters heads to 104-110 percent (In addition to other changes) to make them look more like human beeings.

stahlratte