The Body mesh has been made by Peggy Sims: http://www.peggygirl.net/  
The Head mesh has been made by BNJxLVR: http://vardari.to/sims/

Both meshes have been converted for Mac by Sandy, at Around the Sims.
Please, install the content of the "Install_in_SKINS" folder in your GameData/Skins folder.