I bought this in the same size that I have other Lively bras in, so I did not size up as other have suggested. Big mistake. This is so tight compared to my other Lively bra that I have checked multiple times to make sure it wasn’t mid marked or that I got the wrong size. Initially it felt fine but about an hour into wear the vertical support seams (other have called it “boning” for lack of a better description) are truly the most uncomfortable experience. I wish I could return this one but cannot since I had to wear it to actually realize it is not a good fit. I have tried it a couple times hoping that maybe it was a weird break in period, but nope. Still most uncomfortable fit. I agree that the cups are pretty large overall as well and likely won’t do well with lower but not anywhere close to scandalously cut shirts. So constructive criticism? Lively: make the sizing fit universal across all your bras, not toggling between “sister sizes” or having to read the fine print to size this particular one differently. And I have no constructive suggestion for the “boning” except for go back to the drawing board and throw this feature out. I wish I did. I have been happy with fit, style, and price points prior to this bra.