I know this has been an on-going battle, and we're almost there, but...

When you first go into the tailor the image of your character is too wide, at least it is on my 16:9 display. If you proceed to edit the costume and then go back to the selection screen the aspect ratio is correct.

The image on the left is when you first enter the tailor; the one on the right is when you back out to the selection screen.