lucky! Natural Chicken Pox is hard to get these days,

because many children already had chicken pox vaccines(at least in U.S.). Your child will get life long immunity, whereas the chicken pox vaccine only can provide 10 years of immunity.
When my child was young, I wanted him to have chicken pox naturally. So I tried to set play date for him with a child who's having chicken pox. The sick kid's parent would look at me like i am insane. : ))