O.k., first some vital stats..
Height     5' 10"
Weight     185 lbs
Bra Band    38 - 40
Size cup that I fill..    Some 38 D, mostly C  Some 40 C mostly 40 B
First set of pics show me with a stuffed 42 C.
Second set show me in the size of bra that I fill.
3rd set, with no bra.  I think the days of me running w/out a shirt on are gone.  
 
I was thinking yesterday, that I really didn't know, how big I wanted to grow to..  And since I wondered that, I thought so would others.  So, I figured since I am probably about 15 to 20lbs overweight comparison pics might not only help me, but others.  So, here they are.
This is wearing a silky but not skin tight woman's T-shirt.
I really hope that this helps.  My personal thought is, of course, the 42 C fits my present frame.  What's your thoughts.