I have been as large as a 42G (my first pregnancy), and prior to this pregnancy was a 36D. Yes, I've fluctuated quite a bit and have the stretch marks to prove it. This is the first bra to EVER fit and support like it should, and I've been professionally measured and fit for bras on multiple occasions in search of one that would put my breasts where they belong without making me feel like I'm choking on them.
I ordered 2 of these bras and have been wearing these exclusively for the past 3 months, I even wear them biking, hiking, and for yoga!!!! (my breasts stay put even during inversions!!!)
They are incredibly well made -- supportive in all the right places, comfortable, and they wash well (cold water, hang dry). I am 6 months pregnant and swear I will wear them long after the baby is born too!!

UPDATE: WORTH EVERY PENNY!!!  I've tried cheaper, but turns out I'm just wasting money on a bra that I'll never wear twice.
After pumping exclusively for 3 weeks now these bras have held up amazingly well! I've tried 3 other brands/styles and none of them come close to the comfort and quality of these bras!! I'd like to be able to wear something even moderately low-cut, but wouldn't sacrifice the support of this style to do so (I just layer a thin cami under the top to cover hide bra)  I've ordered 2 more in different colors.