Kendall and Kylie Jenner cultivate a mercurial relationship between themselves. Kendall is an esteemed supermodel who wants to boost her career without the assistance of the Kardashian clan, and Kylie owns a cosmetics brand burgeoning with different colored lipstick and eyeshadow. The pair are more than sisters, and they always make time for respective birthday bashes, posh parties and red carpet appearances. However, the friends can experience sour moments and have to work to battle the petty arguments and fierce jealousy.

Kendall disagrees with Kylie's choices

The sisters harbor very different personalities, so their decisions differ.

Kendall expresses her fears often, and a recent "Keeping Up with the Kardashians" episode films both her and Kim Kardashian coping with their anxiety through meditation. Kylie flaunts her free-spirit, and she loves to express her inner wild. A source from OK! Magazine dishes, "Relations between the sisters have sunk to an all-time low." The news outlet reports about Kendall's disappointment in Kylie's lifestyle. She would rather celebrate with her boyfriend, Tyga, and visit clubs. Kendall's concern ballooned when Kylie allegedly caroused with Kendall's confidants Justin Bieber and Cara Delevingne. The speculation was affirmed when Kylie and her boyfriend attended the Met Gala festivities when only her older sister received that invitation. But what are siblings for, right?

Kendall's peers judge Kylie

According to the popular mag, Kendall's company believes Kylie is too desperate to boost her own status.

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The insider continues, "Kylie's slowly becoming persona non grata...she's been frozen out from Justin and Kendall's party clique." Tabloids run with rumors to generate the most views and the most money, so this information could contain only a modicum of truth. The Jenner daughters have so much love and respect between them, so regardless of irrelevant fights or insecurities, they can forge past these problems. Their collaborative novel "Time of the Twins: The Story of Lex and Livia" will enter homes this November, so Kendall and Kylie certainly have something keeping them together.