I hope this doesn't come out sounding too crass, but I have to say that you have accomplished something that really toots my horn here. 
You have done an excellent job, of using shadow to contrast, and to highlight the feminine form. 
I especially like the hint of the nipple through the T-Shirt; but you have also managed to outline and thereby enhance the slightly swollen Areola with shadow, which really sets these photos apart. You can judge me now or agree if you do, either way I say Magnificent photos. 
Be Brave.
Love One Another.
In Light and Love  
Giant Hugs<3<3<3