Kendall and Kylie Jenner are rocking the cover of the September 2012 issue of Seventeen Magazine. BeTrendMe loves these power sisters and their cover looks great! Check out a behind-the-scenes video from their cover shoot here. The girls talk about their lives in the Kardashian house and how they have the same problems any teenage girl might have when it comes to boys and parents. Kendall and Kylie talk about growing up together and how they went from fighting all the time to becoming best friends. BTM was excited to hear that they discuss a possible Keeping Up With The Kardashians spinoff, talking about all of their adventures together. We are looking forward to a spinoff and be sure to pick up the Septmeber 2012 issue of Seventeen to hear all about Kendall and Kylie!