Vaginal Birth With Twins

Everyone keeps telling me that with twins in going to have to have a c-section, but that's not what I want! I understand I'm going to have to do what's best for my babies, and in that case I will agree to a cecarian if it's absolutely necessary to keep them safe.. But if I don't have to, I don't want to! I want to have a vaginal birth, and although I will definitely be taking the epidural, I want them to come the old fashioned way. I haven't talked to my doctor about it yet, but I will at my next appointment. What are my chances I will be able to give birth naturally?