I ordered my standard size of 38G (I have multiple bras, made by different brands, and they're all that same size) and the sizing just seemed very "off" to me... with that being said, this is my first Elomi bra, but here's what I'm noticing:
1.  Bra Underwire - I find that in the front everything is good, but on both sides the underwire on the sides of each breast (within the armpit area) was digging into the sides of my breast.  I wore the bra for the first time today and I couldn't wait to get home from an all-day event to take it off.  The 2 areas where the side of each of my breasts meets the standard side of my body feels bruised, literally sore to the touch on both my left and right side - although there is no visible bruising.  This is a new sensation for me, as all of my other bras have not given me this issue.  Granted, I've been to personal bra fittings and I'm aware that I have very full breasts, and so I am usually careful to pick bras that do offer a good amount of side support.  But like I said, this underwire was just digging into my sides too much, very painful, I was literally pulling at it all day.  It was a weird feeling, as I didn't really get the impression that the bra was too small on me since I filled out the cups pretty good.  Who knows.
2.  Straps - Well-padded and decently sized - I hate bras that have spaghetti-like straps, those would never work for me.
3.  Back Hooks - 3 hooks, which I love!  I always feel more supported in bras that have 3 hooks instead of 2.
4.  Lace Material - For some reason this is a little bit bunched up, to the point that under a shirt you can see a little bit of bumpage from the fabric.  Now, it's not a huge bunch of lace fabric, but more than what I was expecting.  I have bras very similiar to this in other brands and that's never been an issue for me in a size 38G.
All in all, I'm not too crazy about this bra.  I'd really like to return it, but I've worn it for 1 day now and so it's used without tags.  It's just a shame that for this price I couldn't get a bra that I semi-liked really.  At this point, I probably wouldn't buy another Elomi bra, as I'm now wondering if all of their bras run a little "small"?  Or maybe it's just this style, I'm not quite sure.  I did read the other reviews here and notice that not a ton of others are having that issue I'm having, so maybe their sizing is better than mine because they've already worn Elomi bras and know what to expect / order.