In modern times when the technology can scan something and make it with a 3d printer it's easy to make an hyper-realistic mold of someone scaled to fit a measure… the one thing that is said about pornstar is that they alsways lie about their size... when they take measures they cheat istead of take them scientifically, and use all the means to make they cock bigger: pumping, using good cams, using very small parterns... we are amazed when we see in straight porn a girl using 2 hand to grab a cock and there is more cock to grab, but most of the girls have much smaller hands that men, for example...