Earlier this week, a US magazine ran a story alleging that Kendall Jenner and brother-in-law Scott Disick were having an affair and romantically involved after the model posted a recent picture on her Instagram of the two of them posing together.

Sister Khloe Kardashian is now calling that story false and ludicious. She took to her Twitter today to make fun of the claims, writing:

"I'm really p**sed about this whole @KendallJenner and @ScottDisick thing!! Scott, I thought it was you and I that was having the affair!"

Responding to Khloe's tweet, Scott wrote, "Don't worry @khloekardashian you will always be my number 1."

Not wanting to be left out, Kendall also replied to them: "Excuse me?!"

Finally, Kourtney herself added to the humor tweets by retweeting her boyfriend's post and adding: "Sisters after my man again?! Party!"

Star Magazine boldly splashed the headline, "19-year-old Kendall, Sleeping With Scott!" on their cover page yesterday. Adding that Kourtney is not speaking to either of them, and had allegedly retorted: "They're dead to me."

Well, it's obvious the story is ridiculous but where did the smoke begin?