While it was unclear whether Khloe was joking, she followed it up with another tweet saying: "Oh @kourtneykardash !!!!!!"
And now, the pair seem to be locked in an are-they-joking-or-are-they-being-serious public trolling match.
Just take a look at their comments to each other on their latest Instagram posts:
Despite receiving hundreds of messages from fans asking her to spill the tea, Khloe kept quiet on the mystery feud…for now.
The KUWTK sisters certainly seemed to be on good terms on the night of the Oscars bash, with Khloe posting a video of herself and Kourt in the back of a limo with the words: “Date night with my sister wife @kourtneykardash”.
And it looks like Kourtney is not the only sister in Khloe’s bad books after a new teaser trailer for the upcoming season of Keeping Up With The Kardashians
Saw Kim invite Khloe’s cheating ex, Tristan Thompson over for dinner.
"I was leaving the Mercer Hotel and then I get a call on my cellphone from Tristan. And he was like, 'Oh my god! I'm right next door,'" Kim told Khloe during a FaceTime conversation.
"And he's like, 'What are you doing?' And I was like, 'I'm gonna go have dinner with my friends.' So, I was like, 'Do you wanna come?'"
Taken aback and clearly surprised by Kim's sudden change of heart, Khloe responded: "You invited him to dinner?"
After Kim realised the awkwardness of the situation, she asked Khloe whether she was making the wrong decision. However, the mum to True Thompson was surprisingly supportive— considering what he's done in the past.
"I think you’ve got to do what’s best for you…that’s beyond generous of you. If you want him to have a drink at the end, there's nothing wrong with that," the Good American founder said diplomatically. "That's beyond generous of you."