Boobs so huge and nipples always hard.
Well, Germany is a mostly cold place so that makes the temperature indicators swell in order to stay warm. 
And yet, I remember Beshine posting here, maybe around 2012-13, that her nipples seemed to be getting larger and harder as her boobs were getting bigger. Look back at her pictures at 8k and see if this isn't true; while you can see her nipples making their presence known in many pictures, it was to a far less extent, in fact, they are often difficult to spot under just a single thin blouse sometimes, whereas today, we always see them under four layers; two bras, a tight shirt and then a top shirt.
Well, her areolas are certainly much larger since she first showed up here at the BEA and her nipples do seem to have grown bigger. 
One would expect areola stretching with the stretching of rapid growth, but if anything, I would think her nipples to either remain the same or perhaps flatten as part of the stretching.
I didn't realize the extent of the difference until after reading her post, I went back and started looking at pictures to compare to what degree they stood out. I was surprised; the 10k and smaller were definitely way flatter, but you can see a real difference in pictures after she removed the extensions (by 2013). Her nipples went fro nearly flat to not only increasing in diameter, but projection probably doubled too. I'm pretty good with A&P but I cannot explain the sudden growth at that particular time.
Remember the Christmas 2010 video? Take another look; her nipples barely stood out at all despite it being obviously very cold.