Twilight

Wikipedia:

Since the release of the first novel, Twilight, in 2005, the books have gained immense popularity and commercial success around the world. The series is most popular among young adults; the four books have won multiple awards, most notably the 2008 British Book Award for "Children's Book of the Year" for Breaking Dawn, while the series as a whole won the 2009 Kids' Choice Award for Favorite Book.

As of October 2010, the series has sold over 116 million copies worldwide with translations into at least 38 different languages around the globe. The four Twilightbooks have consecutively set records as the biggest selling novels of 2008 on the USA Today Best-Selling Books list and have spent over 235 weeks on the New York TimesBest Seller list for Children's Series Books.

Thus far, the first three books have been made into a series of motion pictures by Summit Entertainment; the film adaptation of Twilight was released in 2008 and the second, The Twilight Saga: New Moon, was released on November 20, 2009. The third film, The Twilight Saga: Eclipse, was released June 30, 2010.