A simple, quick and dirty release of a lip mesh I commonly use. It works with a number of avs, though I don't have an exact number. Don't expect much support- it's really just for modders.
Check the blog post here- http://thoseeffingcats.tumblr.com/
and you can buy it here- https://marketplace.secondlife.com/p/Plush-Lower-Lip/5137367
Link
Reiku YIn
Sold!