Hi immabe!
I agree, I can definitely see a difference comparing to your starting pics! You are reallly a B cup by now, congratulations on reaching this goal
)))) I think you won't take too long to make it to a 32C.
I agree with Lily that in the pics you posted, you can see that the bras are getting too small! I know its intimidating to go and get fitted, and I admit, its also hard to find a good bra fitter, and a store which carries a full range of sizes( band size starting from 28, with all the cup variations), but its so worthwhile! You will have a much smoother, comfortable fit, and your breasts will look more lifted which is never a bad thing
Not to mention that it's healthier, because you won't have circulation/lymphatic issues caused by poor-fitting bras, and you also won't develop armpit fat/back rolls, which are also caused by wearing the wrong size.
I say when you have the time, money and opportunity, go get fitted