The Kardashians are back and this time its Kourtney Kardashian giving us a shot of her ass in a thong while she does naked yoga on Kourtney and Kim take New York. That show always offers us some great shots of the Kardashian sisters, but Kourtney seems to be a regular showing us the pretty little thong she has on. This is third time Kourtney Kardashian has been featured in a thong on the show, it gives us a good reason to keep watching the show. Maybee next time it will be both Kourtney and Kim Kardashian in thongs together.