KUWTK: Kim and Kourtney Kardashian get in tense spat over candy

An argument over sweets left Kim and Kourtney Kardashian bitter with one another.

In a preview clip for the forthcoming season of the E! show Keeping Up with the Kardashians, the tension between Kim, 38, and Kourtney, 40, was palpable as they clashed over whether they would have candy present at a joint birthday bash – with a Candyland theme – for their respective eldest daughters North, six, and Penelope, seven.

The argument was triggered as the two, along with younger sister Khloe, 35, were relaxing at Kourtney’s Calabasas mansion, where Kim discovered a massive dispenser containing multiple types of candy.

Sister spat: Kim  Kardashian, 38, in a preview for the forthcoming season of the E! show Keeping Up with the Kardashians, argued with sister Kourtney about whether they would have candy present at a party they were planning for their eldest daughters

Standing her ground: Kourtney, 40, made clear she was passionate about the issue

Sister spat: Kim and Kourtney Kardashian, in a preview for the forthcoming season of the E! show Keeping Up with the Kardashians, argued about whether they would have candy present at a party they were planning 

Kim gently prodded the health-conscious Kourtney over the presence of the candy at her home – their mother Kris Jenner had left it there, Kourtney said – while casually snacking.

Kourtney sought to make Kim’s candy consumption as unpleasant as possible, talking about the ‘disgusting chemicals’ in the candy as Kim was snacking on it.

Kourtney called the candy ‘the biggest number one cause of aging,’ asking Kim, ‘Don’t you just feel it when you eat that that it like sucks the life and youthfulness out of your skin?’

Kim replied, ‘No, it makes me feel like a kid inside,’ which led Kourtney to make clear she didn’t want sugary snacks at the upcoming bash.

How it started: A massive dispenser containing multiple types of candy triggered the discussion over the sweets

How it started: A massive dispenser containing multiple types of candy triggered the discussion over the sweets 

Where it started: Kim and Khloe were seated at Kourtney's luxe Calabasas home

Where it started: Kim and Khloe were seated at Kourtney’s luxe Calabasas home 

Focus: Kourtney told Kim she didn't want sugary snacks at the upcoming bash

Focus: Kourtney told Kim she didn’t want sugary snacks at the upcoming bash

Kourtney told Kim that she didn’t want sugary candy at the soiree, but rather healthier options.

‘There’s candies that are not disgusting and filled with chemicals … do you want me to make you a collage or posterboard?’ she asked Kim, who replied, ‘Make me a f***ing pinata: all that s***, and I’ll hit it with your face.’

Kourtney stayed on point, telling Kim they had ‘to have some healthy options’ at the Candyland-themed party, adding to her sister that she was ‘dated’ and ‘in the past’ in her party-planning mentality.

Sharp words: Kourtney told Kim that she was 'dated' and 'in the past' with her thinking

Sharp words: Kourtney told Kim that she was ‘dated’ and ‘in the past’ with her thinking 

Retort: Kim told her sister, 'It's a Candyland-themed party,' which required authentic candy

Retort: Kim told her sister, ‘It’s a Candyland-themed party,’ which required authentic candy 

Low-profile: Khloe didn't take sides in the dispute, focusing on her phone through the row

Low-profile: Khloe didn’t take sides in the dispute, focusing on her phone through the row

But Kim felt it defeated the purpose, telling Kourtney, ‘It’s a Candyland-themed party! Yes, that’s, like, what the party is about, Candyland – it’s not f***ing gluten-free land over here!’

Kim suggested to Kourtney to ‘change the theme of the party,’ at which point Kourtney said it would be a better idea to do two separate ones.

The segment featuring the star sisters ended things with a stare down after they canceled the joint bash. 

No thanks: Kourtney said it would be a better idea to do two separate ones than serve sugar-filled candy

No thanks: Kourtney said it would be a better idea to do two separate ones than serve sugar-filled candy 

No thanks: Kim was happy to split off her party from Kourtney's amid the row

No thanks: Kim was happy to split off her party from Kourtney’s amid the row