Oh, fer...
Yes, definitely possible. After 5 months on spiro, 4 months on wimpy patches, 2 cups caffeine juice and maybe 4 cups of decaf a day, I'm well into filling my 34B. I think I look pretty well balanced. (36-29-36, 136 lbs, 5' 8") I need to shrink my waist another inch or two, but that's not a caffeine issue. Oh, and I also drink green tea with ginger...