What are the dimension of each sizes and what's the jacket's fit? I'm asking since clothing size vary from one region to another.

When I apply for the Swift Student Challenge, I use my Apple ID and it automatically inputs the old name registered in the Apple ID. I have since changed the name registered in the Apple ID to my legal name. The name field in the application webpage can't be changed. Is there a way to have my legal name appear on the application webpage?