How did twilight come so famous?

If you are talking about Twilight as in the book and the movie, then it got so famous because it was just a new book that everybody got into. The whole impossible love between a vampire and a human just made loads of teenage girls love the book from day one. Stephenie Meyer kept the books very interesting as well and you just really wanted Edward and Bella to be able to be together. Now the movie is only such a big hit because there is already such a huge Twilight fanbase all across the world. Without all of the fans waiting for the movie, it would never have become so popular.
I agree with the person above me, but there has been a lot of vampire books just like that
before the Twilight series even came out, so I don't see why this became such a hit. I'm thinking it's mainly luck.