To be perfectly honest, the organic milk wasn’t available (at least where I was living) until she was probably 4 or 5.  But I’ve given it to my kids religiously since.  But I’ve heard that so much and I’ve heard all the experts say that hormones or additives in milk are not a cause of early puberty.  There’s even a debate about whether girls really are going into puberty earlier but the number one culprit seems to be obesity.  And my daughter was a rail as a child too!  More fat = more estrogen = early puberty.  But our kids have endocrine issues which can cause early puberty even if they’re not overweight.