You can change the player model to any other, which is in the game, and still have a player model you can change the size of hands, feet, head and body.
To open the mod menu press F6 or F12 (the Exact button you can see in “settings” -> “manage…”).
How to install More Player Models 2
- Download and install Minecraft Forge
- Download mod
- Do not unzip it, copy to C:\Users\User_Name\AppData\ Roaming\.minecraft\mods