I don't know any veggie adult performers other than the ones listed at the top of the links page: http://www.vegporn.com/links.html
I'd love to know about more, if they exist. We're a small club.
I think Seska & James are the most famous vegan (amateur) porn stars. This gallery (shot by another vegan, Heather Corinna) is without a doubt the prettiest couples set I've ever seen: http://seska4lovers.com/couples_bed.htm
(The full thing is in her members area, a site that is well-worth joining.)