Yeah, you're age is appropriate. As long as you don't get influenced by it. But i personally hate twilight. the entire series. When i see the books in the stores, i feel like shooting them. lol. bella's retarded. WE SHOULD FREAKING BURN ALL COPIES AND EGG STEPHENIE MEYERS HOUSE.
But i mean, you might like it. Take a look at it and see if it's something you're interested in.
Don't! Save yourself the agony and pain of it and skip these crap books. You will only be sucked in unwillingly and not in a good way and it is a trap hard to get out of. You will gain no pleasure or knowledge or get any wiser by reading them.
Sure they may be suitable(ish) to your age but just.. just don't.