It looks as though all might not be well between Kendall and Kylie Jenner these days. Rumor has it that the two sisters are feuding as Kylie is apparently jealous of Kendall's modeling career.

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According to Radar Online on Monday, Kylie was a no-show at Kendall's birthday lunch with her family on Monday afternoon, prompting rumors that the two teenagers might very well be fighting over the spotlight.

A source told the site, "It is a competition between them now as to who can be the more famous Jenner and it is destroying their relationship. It's sad. They used to be so close and now they are really letting this family thing affect them!"

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And it looks as though Kendall isn't the only person Kylie is feuding with these days.

According to Radar Online earlier this month, Kylie has allegedly packed up her bags and moved in with her big sister Khloe Kardashian while she is trying to work out her issues with her manager and mother, Kris.

A source told the site, "Kylie is constantly arguing with her mom because Kris acts like Kylie doesn't even exist. She hates how much her mom has destroyed their family unit and traded her soul for fame."

What's more, it's also being said that Kylie feels particularly close to her sister Khloe because the two feel like they are the "odd ones out" in the family.

The source added, "They both feel like they are the odd-ones out in the same way that it is the Kim Kardashian show for the Kardashians, it is the Kendall Jenner show for the Jenners."

Tags: Kylie Jenner