I have the shirt in an XXL. A little iffy over the tatas, but fits great every where else. If you’re a size 14 I definitely recommend checking out Loft for their knitted tops; good quality, okay price if you get a sale, and very cute. The blazer is also an XXL and fits perfectly.
For reference, I am 5’5 and 210 lbs, 40D bra.
You know the drill: click the photo for links to the items shown.