Except now the super-famous teens are said to be considering leaving the comfort of the family name and reality show, Keeping Up With The Kardashians.
Kendall, 19, has already conquered the fashion industry and modelled for the likes of Chanel and Balmain, with Kylie joining her on the campaign for the latter.
A source told RadarOnline: “Kendall and Kylie have both wanted out of KUWTK for quite some time now.
“They are starting to realise their power because people are focusing on the two of them more than ever before.
“They know know they are hot right now and that is why they are constantly together.”
But, while Kendall and Kylie may want out of the show that propelled them to stardom, they’re believed to be contractually tied to the show for the next few seasons at least.
It’s thought that one of the reasons Kylie in particular is keen to separate herself from the show is her dad’s public transition into Caitlyn Jenner.
The insider continued: “Kylie does not want to ever leave television but she does want to separate herself from the current storyline of the show.
“Caitlyn’s transition has been really hard on her. Neither Kylie nor her sister like the fact they have to talk about the hardest thing that they have ever had to go through on TV.”