Should vs Hip ratio. Even the most narrow hipped women? Their hip will be wider than their shoulders.
These youtube videos are all cross dressers.
You can see the hip / shoulder ratio immediately
https://www.youtube.com/watch?v=KnctlmVPZIc
https://www.youtube.com/watch?v=uSG8W21EWEQ
Throats can be shaved, facial bones can also be shaved (see carol cheng), but can't do anything about shoulder/hip ratio. It CAN be hidden by the angle they stand and also clothing they wear, but this is similar to how some WG hide fat bellies.
To spot the shoulder/hip ratio? Simply look at the door they're holding open. The door is a straight vertical line you can do a quick visual measurement between the door edge and the shoulder.