One could say that the vampiresin these novels have evolved. Consider the classic vampire charactaristics. They feed on human blood, live in dark, drafty castles, hunting at night and sleeping during the day. They cannot go into the sunlight and they shapeshift into bats. Pretty typical right? This characterization could pretty much apply to every vampire story or movie you have ever read or seen.
However, the Vampires in Stephenie Meyer's novels have evolved into something totally different from the norm. Meyer has stepped away from garlic and holy water and created a vampire that some wouldn't mind running into. Perhaps this is what makes them so appealing?
The vampires in Meyer's novels aren't some blood-thirsty monsters. They are young, attractive, intriguing...people. The Cullens aren't unlike many of the families that live in Forks. They live as a family, feeding off the blood of animals, not humans. The sun doesn't kill them. They have made their home in a beautiful art-deco mini-mansion and they do not sleep in coffins packed with dirt. In fact, they don't sleep at all.