An excellent site dedicated to twin erotica - unfortunately it is a pay site and has announced that it will be shutting down in the next while. Check it out if you while it is still up.
hxxp://www.two-of-her.com/cgi-bin/teemz/teemz. ... rd=_master
The message board for the site above, there isn't much activity on it nowadays but you can still check it out for the great links and stories already posted there.
hxxp://www.worth1000.com/galleries.asp?rel=Att ... p&id=17596
Worth1000 - a image/photo manipulation contest site has several galleries with the clone theme, usually of celebrities.
Body Doubles - site that searches for and promotes identical twin models. I think.
Quasar - Japanese site - has a large number of galleries that display twins/clones created via photo manipulation.
Japanese site - a small spin off site of the Quasar site above, contains photo manips depicting twin'd women.
Japanese site - a lesbian anime/manga image board - has a twin/twincest image thread running every so often.
--- Artist's Site ---
Moon Flower - Artist - Wowo(?) - Fantastic artist who looks like he/she uses a drawing tool something similar to oekaki. Look around and you will find some definite 'twin/identical' women themes in his/her works.
To be updated