Before I started HRT, I remember reading a thread or two about how one's nips won't change much on estrogen...
Well I was looking at mine the other day, and realized they had changed! They were about 3/4" (~20mm) before HRT, and almost leathery in texture and color. Now they are very silky-delicate, and about 1.5" (37mm) diameter.
We won't mention the sensitivity increase, but yeah that too. But it was the size which wasn't supposed to change much, yet it has (for me, at least).
Anyone else have changes? Or none?