I experienced growth that's quite similar. I experienced almost no tenderness for the longest time... only recently (a year and a half on hormones) have I acquired much sensitivity, and even now it is negligible.
However, I also haven't grown all that much. I am fairly flat... and I doubt I'm yet to an A. However, this is probably just because I am a super-skinnybeans, always have been, and may always be. My nipples and areolae have gone through little or no change, unfortunately. So ... if they weren't so perky, and if I weren't so skinny, I might be thought to have moobs.
I prefer to call them noobs, though.