Quote Originally Posted by Lee View Post
Okay stupid question LOL...

What does the width of a womans back have to do with her tits? Isnt that like a guy measuring his ass to get his dick size?
Think of the "back" as a measurement for the "straps" and then the letter for the "cups"

To make it more male ...

it would be like a Jock Strap with a 34 inch waist and then pouch sizes for youth, teen, adult - or a Cup with the same outcome