Khloé Kardashian's older sisters are worried about her partying.

Kim Kardashian West, 34, and Kourtney Kardashian, 36, are reportedly ''close to staging a mini intervention'' as they believe the 30-year-old blonde beauty has ''changed'' since she reunited with rapper French Montana in March.

A source close to the 'Keeping Up with the Kardashians' stars said: ''Khloé's changes since she started hanging with French again after their split. She's unreliable.

''It wouldn't be a big deal if it was once in a while, but it's become the norm for her to bounce from one party to the next all week long.

''She's barely come up for air. They hung out with Diddy in Miami in March, the she partied for three days and nights nonstop at Coachella. Kim and Kourtney are close to staging a mini intervention.''

Last summer, the former 'X Factor' host moved to the Hamptons to film the reality show, 'Kourtney and Khloé Take The Hamptons', with her eldest sister but recently admitted she found it very boring.

She told US OK! magazine: ''I don't want to [go back]. No, that was way too much for me. I will return -- it's a great place to go for a weekend or so, but three months is not fun. There's nothing to f**king do out there.''