I have an idea that there may be a corollary between cup size/breast growth and another measurement I tried on myself and would like to ask if anyone would try the same test and let's see if we can come up with a new way to see our increases - or not.

If you sit up normally with no bra on or other support clothing - just take a flat wooden or plastic ruler or stick, and place it across your most outward dimension of both breasts -  the nipples would prolly be best - and then measure the cleavage in between them from the straight edge to your sternum (breastbone) and just write the number down.

I wear a full C bra and my cleavage valley is 3 1/8" deep.

Wishing I had done this years ago when things were growing, it may be a good way to see that you really ARE growing boobs and not get depressed when you cannot actually see it happening.

Maybe it would be a good idea to add this measurement to whatever diary you are keeping.

Just an idea.

This is interesting... I'll have to give it a try... I'm constantly monitoring progress 

Anyone else think there's merit in this?

That's really good Idea JodieBlonde, I'll have to give it a try also....
Thanks

Why don't you just use a tape measure and take your bust-line measurement? O_o

It's what I do when I'm curious.