I have this in a different colour and so bought this in the same size however this came up large in comparison. It is the best sports bra I've found and at a 32GG/H, they're pretty hard to find! Don't hesitate, just maybe get a cup size smaller than normal! The back size is still perfect.
I like the material and it looks as I expected. Quality is surprisingly good considering the price. I'm a size 10 with fairly slim arms and went for the 12/14 which fits but is still pretty tight. It goes with everything though, so overall I'm pretty glad I went for it!