The younger sisters of the famous Kardashian trio, Kendall Jenner and Kylie Jenner, have finally announced their design collaboration for American brand, Pacsun. The youngest of the reality show family have previously designed for a jewelry line, making designing for clothes a natural next step. Their clothing line will feature the California lifestyle of the stylish duo, which will include jackets, button-down tops, high-waisted shorts, dresses, graphic tees, bandeaus, denim, and many more! The line will be available in stores and online starting next year, February 2013. With these two Jenner girls slowly following in the footsteps of their very successful sisters, we definitely can't wait to see what they have in store for us next! For now, take a look at some behind the scenes photos the girls posted on Instagram and Twitter from their shoot.