I really do believe that my style is informed by the fact that I had such issues with my appearance at various times of my life.
Style offers concrete rules you can follow. You can use it as a resource rather than a barrier to feeling good about yourself.
I think that the way to have style is to accept where your body is right now, heavier or skinnier, whether you're going to change in the future and dress it as it is. The fact is you can always find clothes. It may be harder for plus sized people, I completely understand that. But I don't believe that it's impossible to dress with style.
Not one person I know isn't concerned with their appearance. To trivialize fashion is to rob ourselves of a great tool.