Let's not get hysterical. Trans women generally take hormones and hormone suppressants that stop the growth of facial hair and other male attributes. If they begin that regime as teens, they'll be pretty much like biological men once they're grown. As long as they follow up with surgery. But nowadays, it seems, not all are willing to do that.
For a more nuanced take on all that:
She's a Transgender Pioneer, But Renée Richards Prefers to Stay Out of the Spotlight