The show mostly, the Kardashian clothing line, their sister fragrance, their sister nail polish, their sister makeup (most of these are gone now, including the Dash stores). I think she helps somewhat with the Kids Kollection of Klothes (omg enough with the K's already we get it). But now I think they all make a decent amount on their apps. I think it's $2.99 a month. My sister said Kourtney's is the best (ironically) but when I looked at the content, it was all created by someone else - recipes, articles, pictures of decor, etc.
And of course their paid endorsements - if I have to see one more stupid instagram post for hair gummies... just kill me.
I also have to imagine Calvin Klein paid a pretty penny to get all of the sisters in a campaign.
On another note - does every episode have to have some ridiculously far-fetched & scripted Kris segment? The ash diamond, the tracker in grandmas shoes, the mime-for-a-day, being obnoxious with jonathan, obsessing over grandmas stupid mixer being on display - I FF through all of her scenes. I DONT GET THE POINT. Its always extremely contrived & immature... I have to remind myself - this woman is SIXTY.