Well everyone knows of the Kardashians.. however, there are not just two sisters. There are at least three that are stars in that one. I can think of a few shows involving sisters, but not just two of them. That is why I am stumped! Maybe "two" is flexible, and he just meant Khloe and Kim.
Lol.. I do not watch tv a whole lot and especially those type of shows. So it would puzzle me at least. I usually just watch movies occasionally. Not much into tv shows. Anyhow the main point is I hope that tv show does bring up C&S briefly.