not really because when she grows up she will be a real show off when she finds a BF so and she will leave you out of everything so not realy to have a sister but it can be fun playing together
i think you should just talk to her, and work it out. she probably might be creeped out by it because its unusual.. and it also all depends, if you're a boy or a girl if you're a girl and you know...
It depends. You may be stepsisters- your parents split up and your Dad gets a new wife and has a daughter, your sister. What if they brake up and your sister's step mother has another child? Then no,...