The neckline is not too low that it shows a lot of cleavage but not too high that it feels you are being strangled. The gray is more of a bluish-gray instead of a heather gray that I was expecting but it still turned out perfect. They are fairly thick but I still reccomment a nude or white bra with the white tank, the other two colors are fine to wear whatever under. There is no sewn in bra.  The bottom of the shirt comes to just below my hips (ordered small, I'm 5'6'' and 130 lbs) which is great because it covers my pants even I don't show my stomach.