Kendall Jenner and Bella Hadid shows off their bums in thong bikinis

Models of the moment, Kendall Jenner, Bella Hadid and a few other famous friends are currently on a model-filled vacation. The 21-year-old reallity star and her 20-year-old besties posed up atop a Jet Ski as they holidayed in an undisclosed location. See more photos after the cut