This is the best fitting shirt I've ever gotten. I'm used to wearing men's shirts and being forced to tuck them in any time I want to button them, or make other awkward adjustments and then feel self-conscious, but I don't have any of those issues. I can just put this shirt on and not worry about it. It's comfortable, lightweight and cool, and everyone compliments it.
I'm 5' 0" with a 47" bust and I bought a size 18. Not only is it a great, comfortable fit, but it does a good job of giving me that more masculine silhouette I'm after. I never had any luck with binding because of my size, and this shirt gives me just about as much of that flatter look as my binder did, without any of the back pain.