I realized I needed to fix a definition of this "fit" in my mind by
learning about various cuts of blousesin other words, to build up my
vocabulary. The extra vertical tuck under the breasts, what's if
called? I went Googling and couldn't find a thing.
The term for those vertical tucks are "darts".
There is http://www.thefashionspot.com, lots of fashion forums there and
member pictures to guide you... I think the Personal Style forum is a good
place to start.