The Kardashian-Jenner Empire keeps getting bigger and bigger. It seems like almost every day, this reality-star family is coming out with something to grow their billion dollar wealth. Now it's the youngest members of the clan's turn. 

Kylie and Kendall Jenner, who are 14 and 16 respectively, have just revealed that they are writing a science fiction novel for teens which they hope to release by next summer. The story is set 200 years into the future and co-written with Maya Solane.

The girls said they were inspired by their favorite books Harry Potter, Twighlight and Hunger Games. They said they came home from the movies one day thinking that they'd like to write a book that they could maybe turn into a book one day. Once they got home, they wrote three pages of notes for the book, which they gave to their mother Kris Jenner who got them connected to the publishers.

The sisters told E-news that thay want to do something they really love and that is unique to who they are.

Simon & Schuster will be publishing the book, which they hope can be turned into a series.