thanks wj4. i just feel really constricted when i try to move my shoulder for the jacket and i feel like if my shoulders got any bigger it would look very sloppy because the stitching where the sleeves connect to the shoulders is literally on top of my collar bone and not on the deltoid of my shoulder.
(ignore the white marks, mirror is dirty

)
[URL=http://i47.tinypic.com/24dj6et.jpg%5B/IMG]http://i47.tinypic.com/24dj6et.jpg[/IMG[/URL]]
[IMG][URL=http://i50.tinypic.com/2i6o0w.jpg%5B/IMG]http://i50.tinypic.com/2i6o0w.jpg[/IMG[/URL]]
[IMG][URL=http://i45.tinypic.com/35bcp07.jpg%5B/IMG]http://i45.tinypic.com/35bcp07.jpg[/IMG[/URL]]
the yellow box shows where the stitching that connects the shoulder and arm is, the red circle indicates where my shoulder actually is.
also, the length of the jacket seems too short. it barely covers half of my butt. not sure what the conventional length is but this seems just a tad bit short.
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Dress/casual shirts are not going to allow a wide range of motion like a t shirt, but you should also not feel like you are shrink wrapped.
Contrary to popular belief, there is no 'set' length for jacket. If you're 5'5'', a jacket that cover your whole rear will look like it's too big for you. I prefer jacket that covers about 3/4 of my rear. I'm also not that tall, I'm 5'9''.