London, June 29 (ANI): Kim Kardashian's half sisters Kendall and Kylie Jenner are writing a novel together.

The teens are collaborating with co-writer Maya Sloane for their debut book, a sci-fi story about two sisters set 200 years in the future.

The as-yet-untitled tome is due to hit shelves next summer (13), and Kylie, 14, and Kendall, 16, hope it will be the first in a series.

We want to do something so different, something that we really love, Kendall told E! Online.

I think we will definitely get it done (soon) with how fast (the process) is going, Kylie said. (ANI)