I'm currently 39 weeks pregnant with my first child, so though I haven't yet used this bra while actually nursing, it was recommended to me by tons of nursing friends and I get to see it "in action" all the time while we're hanging out :)  I purchased these bras when I was about 18 weeks pregnant, because even though I was barely showing and haven't put on much weight even now at full term, what weight I've put on seems like its at least 80% in my boobs, hehe :)  I was a 34C pre-pregnancy but now am likely an E/F at least, if not bigger.  These bras have been supportive and comfortable all along, and I think they'll have room to stretch even during the first few weeks of engorgement.  The provided removable soft cups are great for adding shape and preventing nipple peek-through when wearing T-shirts.  I was an underwire gal before pregnancy, and was concerned that these bras wouldn't be supportive, but amazingly they are.  The nursing clips are also really easy to use, yet secure.  The butterscotch shade is great under any color tops - doesn't really show through.