Nina is All Natural at a D Cup.
When feeling for a fake breast a dead give away is a push up with your thumb from the underside and you have the big honkers in your hand. Breast tissue is rather consistent stuff whether it a woman has firm or squishy tits. An implant however does not. It is the movement, a sudden acceleration of your thumb up into the breast that gives away the fact that what is making up the bulk of the breast is not in fact natural breast tissue.