OK so aside from the manic grin and obligatory dance party...
...it's honestly a bit big, I think. I certainly had no issues at all getting in/out of it, and it's got places where it sort of stands out a bit around the neck and underarms. I'm guessing if I lose much more weight I'm gonna need to go down a size. In the meantime I've got it folded up underneath so the full-length top now looks more like the tri-top, and it seems to hold me in enough to look good with my t-shirt tucked in for pretty much the first time in my life, so I'll take that.
..and now, back to manic grinning and dancing...