http://www.greatwallofvagina.co.uk/homeJamie McCartney actually created this work to combat the sad tendency for women to feel theirs doesn't look "normal" or "right" and so get tempted to have unnecessary, expensive, and painful cosmetic labiaplasty.
So this project ended up involving 400 women (well, that's how he describes it, which isn't very friendly to the several trans men who are included) which includes trans women and men, pregnant and post-pregnant women, mothers and daughters, twins, people of a very diverse age range, pierced, unpierced, etc.
The purpose of this was exactly to show how different women's labia are (he gave it the title he did because it's catchy, not because he doesn't know the difference between a vagina and labia) and so help women feel that they're not somehow the only ones "not normal". I have the book (which means a lot to me, I'd like to appear on the wall one day post-op), and it's a very moving story how it all came about.
As it happens, he did also do a tongue-in-cheek penis version called 4x4 which does remind me of the cab controls of an earth excavator

. I won't link to it here, as it's not ToS-friendly

but if you're curious PM me for a link.
Anyway, I just wanted to say this absolutely isn't a piece of adolescent smuttery, it's had a very positive impact on a lot of women around the world since he began the project and it snowballed.