Original proportions. Removed cape.
Make sure you have "Dynamic Character Resolution" at the very bottom of Graphic settings set to "Off" and that you have the newest version of ORFix in the "Mods" > "BufferValues" folder (create it if doesn't exist). You can find the newest ORFix file here. If mod breaks in the future you should be able to fix it using a general fixing script for your game version similar to this one.