I do know someone who did used herbs and it did help increase from a full 34B to a small 34D.
Female breast enlargement herbs that have been found to be most useful are: saw palmetto, Don Quai, wild yam, dandelion root, blessed thistle, kava, and the herb from Thailand called Pueraria Mirifica, and fenugreek.
Fenugreek does have some success stories and it does lower cholesterol. I think its better than go through surgery.
I know its self esteem issue but i dont know the insanity about big breasts. I think shape and firmness is better than big and saggy. My favorite size is medium like 34B-C, but i wouldnt make a big issue if my GF was smaller and bigger than that. In fact, my current GF wears either 32B or 34A.
I would think alot before getting surgery; because although some do look nice others look quite bad and unnatural.