They've continued to have both big and small fights with one another for many years.
But it appears as though, for Tuesday at least, Kourtney Kardashian and her younger sister Kim were having a good day.
Taking to Instagram, the 39-year-old shared a series of photos with the wife of Kanye West, calling her her 'first best friend'.
Friendly siblings: It appears as though, for Tuesday at least, Kourtney Kardashian and her younger sister Kim were having a good day
Tuesday saw the sisters in the hotseat toegther as they filmed their interviews together for an upcoming episode of Keeping Up With The Kardashians.
Kourtney opted for a strapless black tube top and a pair of loose-fitting taupe colored pants.
Love: Taking to Instagram, the 39-year-old shared a series of photos with the wife of Kanye West, calling her her 'first best friend'
Her brunette locks were styled out and straight for the shoot and her makeup contoured and complete with a glossy lip.
Kim stunned in a long-sleeved pink form-fitting shirt.
Her dark tresses were also left out and styled into a loose wave.
Fighting again: But it isn't always been an easy friendship for the pair, taking to Twitter earlier in the week to publicly share a little tiff
The KKW Beauty founder sported a similar makeup look with contoured cheekbones and a dark nude plump lip.
But it isn't always been an easy friendship for the pair, taking to Twitter earlier in the week to publicly share a little tiff.
'I hate how @kourtneykardash says issues. She like drags it,' tweeted out Kim to her 59 million followers.
However her elder sister appeared less than impressed replying: 'Oh wow hate is a strong word. Let's be positive today shall we?!'
The daughters of Kris Jenner also went through another long rough patch at the end of last year, when Kim called her sister 'the least exciting to look at' during a scheduling argument over the annual family Christmas card.
'I need Kourtney to not be so f**king annoying with a stick up her a** like she runs this s**t cause she doesn't,' vented Kim to Kris and sister Khloe.
'She's the least exciting to look at. So she can be out.'
