[surferjoe2007]

Drastic growth in 3-4 months starting at A?  That's not likely.  But here's the fastest/most drastic I can come up with:

• First sig post.  Both nuts nutrition and basic program first.  That'll take 2-6 months before you'll be able to do the more/stronger herbs mentioned.  When you hit C cups or larger add on the stronger stuff.  Not sooner, and add gradually.  Too much before you can handle it will only cause trouble without helping.
  
• Get a vacuum pump.  See pumping section of forums.
  
• Massage 1-2 times a day, at least 6 hours apart.  3 times if possible (still 6 hours apart), but that may not be practical.  See massage section of forums.  Massage butter here: http://www.breastnexus.com/showthread.php?tid=23076&pid=197402#pid197402
  
• Creatine per label instructions: High amount to start then drop to 5g.  Load up on starches before a workout to avoid burning muscle.  Do bench presses.  3 sets, 6-12 reps per set, 3 times a week (every other day).  Increase weight as you progress: enough to leave you sore at the end, but not so much that you ruin your form.  After a lot of workouts this adds about a cup from muscle rather than actual breast tissue.
  
• If you need something instantly try tiger balm, but not the extra strength.  Or muscle rub.  But that's just swelling, not growth, and it smells.  Other stimulation/irritation is similar, but be careful not to hurt yourself.
  
• This on top of all of the above would probably help too for a little bit faster results (if you're really going all out): https://www.antlerfarms.co/Deer-Antler-V...dvt001.htm .   But it's a bit expensive for what you get so you may want to ignore it.  Start with 1/4 tablet and gradually increase.  If you get headaches, stop 2 days and reduce back down.
  
• Long term you might drop the more time consuming things and just do nutrition and herbs to be practical.   Maybe a little massage.
  

At minimum I think that'll take a month to get a cup or two and most of it would be swelling and muscle.  At most 3-4 cups in 3-4 months.  Or it may take 4-5 months just to get a large B.  Don't get discouraged, it often takes time no matter what, especially when starting at As.  Eventually there can be a lot of growth, even several cup sizes.

Don't do any of the herbal stuff under the age of 18, and preferably not the stronger herbal stuff under the age of 23.