Courtesy of Celebuzz

The Kardashian sisters are as well known for their endorsement deals as their careers as reality TV stars. Appearing in ads for everything from perfume to PETA, the Kardashian clan dominates billboards across the country. Kourtney, Khloe and Kim may have some stiff competition from younger sister Kendall, though, who has been modeling for Forever 21 and recently landed a new gig as the face of Australian swimwear brand Leah Madden. Kim posted photos on her blog exclaiming, "How stunning does she look!?!? I couldn't be more proud!!!!"

Which sister makes the best model? Take a peek in our gallery below and let us know your favorite.