My vagina has had hair on it for as long as I can remember, but I don't know what to do with it. Do I shave it off or let it grow longer and longer? Or do I just trim it so it's shorter?

How old are you ?

I am 13, why?

I would have to say your memory is a problem. Most girls don't start growing pubic hair until age 11 or later. So if you can only remember less than 3-4 years back, you have a problem.

Whether you shave your pubic area, is up to you. I would discuss this with your mother. But since no one but you and your doctor will see it, why does it matter?

Agree, many girls just leave it, some trim, some shave, like many hygene issues that is something you and your mother or other adult female you share with should discuss.

Your vagina has hair for a reason. It is there to protect your body from bacterial infections. Hair also helps absorb odor, among other things.

At 13 shaving should be the least of your concerns.