Kendall may be more famous than little sister Kylie Jenner these days (well, at least she's the one with the more legit career), but when the reality starlets team up for a promotional appearance, it's utter mayhem!

On Saturday the Jenners stopped by PacSun in Santa Monica to promote their clothing brand, and fans lined up around the block for a peek at the girls. The first 500 people at the store were given wristbands and guaranteed the chance to meet the starlets, and they were allowed to start camping out in front of PacSun at 6am.

Kylie and Kendall debuted their joint collection in February 2013, and since then they've worked on a number of other business ventures both on their own and together. Lately there have been reports that Kylie is trying to break into the music biz, but after watching one of her snapchats the other day, we have mixed feelings about it. Maybe she should take some voice lessons and stop lip synching along to her pal Pia Mia?