There's a good chance that the holiday season in the Kardashian household will be anything but joyful and merry this year. There's a new report that suggests sisters Kendall and Kylie Jenner are at odds with each other because they are absolutely jealous of each other.

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While rumors have persisted for some time that 18-year-old Kylie envied her older sister's international modeling career, there are whispers now that the girls are feuding so much that they can't even film a spin-off show together.

Mom Kris Jenner isn't worried about her daughters being enemies, says Naughty Gossip, but instead she's concerned about the potential financial losses should they scrap their spin-off plans.

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A source told the site, "Kendall just isn't into Kylie or the family or reality TV anymore. She does not want to be a part of this spinoff because Kylie is trying to make it all about her. She wants to be taken seriously as a model and is over reality TV, where no matter how successful you are, you will always be a joke. She is refusing to do what her mom says."

Apparently, that's not all. Kendall supposedly thinks that she's above Kylie and her group of friends, as she's in a league all of her own.

The insider added, "Kylie and Kendall run with such completely different crowds and Kendall really feels that mixing their two lives into one is going to be near-impossible. Simply put, most of her friends cannot stand to be around Kylie's crowd. Kendall's model friends actually refer to her younger sister's friends as 'ratchet fame whores!'"