Lips vs. Labia: not many people know how to relate woman's labia with their facial lips.
"Women 'self-mimic' their outer genital lips by making their facial lips wet by licking them or using lip gloss", resembling to labia lubrication, "thus creating a sexual invitation".
In face-match.net, we have proposed a general hypothesis where a woman's facial lips resembles to their genital lips.
In order to do so, we have started a research comparing tons of images and placed them into a game. We would like to gather images from all over the world so, if you want to participate on this research please donate an image. Read more.