Model Kendall Jenner, TV personalities Kim Kardashian and Kylie Jenner
(L-R) Model Kendall Jenner, TV personalities Kim Kardashian and Kylie Jenner arrive at the 2014 MTV Music Video Awards in Inglewood, California August 24, 2014. Reuters/Kevork Djansezian

Kendall Jenner is emerging from the shadows of her famous Kardashian sisters, Kim, Khloe, and Kourtney. With Kendall's modelling career and campaigns, Kim Kardashian is now said to be filled with jealousy over her sister's success. The sisters are reportedly fighting because of such jealousy.

OK magazine reports that Kim Kardashian is worried that Kendall Jenner's fame is already surpassing hers and that this fame could be sustained in the long run. The reality star is said to be worried that she could be bumped out of the spotlight by her own sister and that she would stay out of it for good.

"Kim is particularly jealous of Kendall and has it in her head that she's taking a ton of business away from her, so the knives are really out," the insider detailed to OK magazine exclusively. "They've had a lot of tensions recently, but the money-spinning Estee Lauder deal really pushed Kim's buttons and she's jealous as hell," the source added.

Kendall, however, is not letting Kim's jealous streak break her and is fighting back. The magazine's source reports that the model already said some harsh words to her sister. The budding model, who landed a Karl Lagerfeld campaign for 2015, also called Kim's naked photos on Paper magazine cheap and nasty. As a result, Kendall has been at odds not only with Kim Kardashian but with her whole family. The insider shared that things are really ugly between the two sisters, but Kendall is also alienating the family because of her "self-entitled, Queen Bee attitude."

This new report is a far cry from what Kendall herself told Dazed magazine (via The Cut). According to Kendall, none of her sisters are against her modelling career, and her whole family is supportive of all the campaigns and shows that she had done. She even said that whenever there's a show that she's participating in as a model, each one in her family would text her to support her. She also added that Kanye West, Kim Kardashian's husband, personally told her how proud he is of her and it made her feel good to hear it.