Here is a new size chart I made up to replace the old sketch I had done a little more than a year ago. This is the current female cast, lined up in order of bust size. Yes, there is someone smaller than Flora here, though that hasn't been brought up in the comic... yet.
Hope you like it.
Note: Don't count on the height or bust measurements to be entirely accurate. This is all done off the top of my head, and there could be some inaccuracies. Take it as a general comparison between characters, rather than accurate scientific measurements. What I'm saying is... don't try to put too much thought on it. Just enjoy.
This was the first image I did while I had my webcam on.