To answer your question for me yes the AA - C is just from noogling. I have taken a few supplements off and on like Spirulina, EPO, MSM, collagen, and I use wild yam cream nightly, but nothing like PM or BO, so I'm guessing that noogling has done most if not all of the growth for me.
As for the rings mentioned, here's the ones I had recommended. They are actually meant to increase nipple size, but I've found that used when noogling they prevent them from swelling and growing as much as they do without them. They also seem to change the shape of my breasts inside the domes, making them more rounded which seems to help with giving them a nice shape as they grow.
http://www.extremerestraints.com/nipple-toys_60/nipple-enlarger-ring-kit_413.html