You do love to contradict hey!
Body fat content has been proven to make a BIG difference in breast size
and that's another reason why comparing breast growth is a bit ridiculous.
I lost 30 pounds in a year, its a miracle I still got breasts at all!!

Its been 16 months BTW. Comparing E levels or doses is just about useless,
since everybody's got their own sensitivity to it.
As I said, I'm very thin. Can't even pinch 1/4 inch on my stomach.
I can pinch 2/3 inch on my thighs and even more on my buttocks.
All my fat is bellow the waist, probably hereditary.
From my waist up, besides my breasts I can't pinch more than 1/8 inch anywhere, my ribs are visible
and they've always been. Always had almost no fat on my upper body.
I've never seen anybody, anywhere, with more visible veins under their arms, a sign of low under skin fat;
they are a lesson in anatomy (not very elegant for a woman, they annoy me).
When I was training on junior team in my early 20's, I had 2% body fat in the water tank test!
I'm now about 12-15%, still much lower than avg women, women athletes usually have
this level. But its all well placed so its ok