I ordered a size 32DD after emailing a Bra Fit Assistant from Bare Necessities and taking my own measurements (I know how to take my own measurements because I sew).
When the bras arrived they were so small that the current bra (36C) I have was significantly larger than the 32DD received. The bra received could fit in the 36C cups easily with an inch of space on either side!
I was not expecting the sizing to be this off as I had gone through the reviews to gauge the fit according to others.
The only reason I am giving this bra a 2 instead of a 1 is because the quality was actually good and as advertised; the size is completely unreliable so I would say only get this bra if you do NOT have a large bust. Highly disappointed as this was a bulk purchase.