I used to know how to adjust my body's frame so I could it narrow or lithe, but been awhile since I played and now I'm checking Kitteh's mod. I have forgotten what I can do to lower my frame rating aside from using the editor. This is one of the few things you cannot adjust with reducto or Shouldra. I'm thinking fox gems might do it, though I'm still a little ways off before I start slammin those to get the kitsune features I want.