But insiders say as Rob Kardashian and Blac Chyna continue to grab headlines, his sisters are not happy to share their slice of fame.
Last week, former stripper Blac – real name Angela Renée White – graced the covers of celebrity magazines US Elle and Paper, and sources say this has left Kim Kardashian seething.
Pals say Blac's naked pregnancy shoot for Paper magazine – which Kim famously posed for with her "Break The Internet" cover in 2014, was the last straw for the mum-of-two, who is sick of the former stripper trying to copy her and cash-in on her success.
A source says: "Kim is furious and is hell bent on taking down Blac, as she says she's a hugely dangerous threat to her and her sisters and needs to be stopped.
"Kim's trying to keep Blac as close as possible so she can intercept any future deals that might threaten her own success – and has even slyly suggested her and Kanye manage her which Blac has seemed open to. This way, Kim can ensure that she keeps control over both her and Rob."
For the full story grab this week's issue of Closer on sale now.
More Kim K news:
Kim Kardashian isn't going to let a skin condition hold her back
The truth behind Kim Kardashian’s ‘desperate’ bikini body reveal
The Kardashian-Jenners before and after rumoured surgery: See their changing faces