I'll take a photo tonight and get it uploaded, in the meantime i've done a mini graphics in mspaint to explain the problem, might have a better understanding (attached to this post)
haha the change won't help
I'm a slim, not skinny but not average medium, just slim, the jackets a slim fit! and fits like amazinlgy perfect! even when it's closed, and open, but when its open it jus flairs out.. I totally understand your point about being big chested, butin my case it's like all straight top to bottom, so don't c why it would flair out..