Some babies are born with it and some without. All of them get hair eventually, although it could, in some extreme cases, take a couple of years. Those who have it at birth may lose it in the first few months—or not. It really varies from one baby to another, and there is no way to predict who will and who won’t have hair. Lucy is likely to lose at least the hair on the back of her head from the constant and repetitive friction against her bedsheets. In either case, lost hair will regrow after a few months.