NEW YORK -- Stephenie Meyer acknowledges her new book isn't exactly "new."

Appearing Thursday at New York Comic Con, the author spoke of the 10th anniversary edition of the first book of her blockbuster "Twilight" series. The release includes the original "Twilight" along with "Life and Death," essentially the same story, except she switched the names and genders of the main characters, with Bella and Edward now Beau and Edythe.

"I want to say this is not a real book, and I am totally aware of this," she said at the Jacob Javits Convention Center.

"Twilight Tenth Anniversary/Life and Death Dual Edition" was No. 2 on Amazon.com's bestseller list as of late Thursday, although several readers have complained "Life and Death" often contains the exact wording of "Twilight."