The two girls snuck away from their luxurious lifestyles on Tuesday to enjoy a day out at Pismo Beach Dunes ahead of Kaia's 17th birthday. Instead of slapping on the usual dune buggy attire, Kendall and Kaia chose to show some skin!
According to the Pismo Beach Dunes site, appropriate attire includes "a jacket or heavy sweater" and "pants that are easy to move in."
Kaia's got one part of that down, sporting a leather jacket, but she pairs the jacket with tiny, little short shorts. To be fair, they look pretty easy to move around in.
Kendall's 50/50 too -- sporting loose pants but with a long-sleeved crop top.
Kendall and Kaia couldn't end the day without reminding everyone they're high-fashion models. Using their buggy and surroundings as props, both girls struck serious supermodel poses.