Yelda and Hoping, I hope you enjoy having red hair and full breasts! ;D Don't' give up on your dream ~ and feel free to pursue it how you wish. Deciding on implants or fat transfer is okay, too.
It is amazing how our self-esteem gets cycled in to how we perceive we look and how it sometimes has nothing to do with how others perceive us.
I have deflated breasts - from nursing for a year not weight loss. I started out a 36C, engorgement and nursing made them go up and down all the time. When I was done nursing, I was very deflated, and as time goes by and I age, it gets worse. So far I am very happy with my NB.
Sometimes I think changing times, number of sessions, and lengths of sessions can stimulate growth and changes. Your body gets used to the stimuli after awhile and it becomes "normal". Changing the time of day, etc. can shake things up a bit. This is also true of exercise and diets.
I think sometimes women that have been pregnant or breastfed get faster results because the body has already been through some massive changes over a short period of time with the pregnancy and has a been-there-done-that type of response. It is "familiar" with the stimulus and with the stretching that has been created. On the other hand, everyone is different. My breasts didn't stop growing until I was 23 and didn't begin to grow until I was 16. I don't think there is any way to know who will have what type of response and over what time period.