I am a 34DD (I am currently nursing, thus a little larger than normal).  I am not an overweight individual and I like to workout, so that is why I thought this bra would work great.  I just should have ordered a large.  VERY tight.  Very hard to get on and totally squishes me flat down into a uni-boob.  Once I wean, this bra will work better (I am normally a 34C), but I wish it worked now.