Sisters at war: Kim Kardsashian is 'jealous' of Kendall Jenner

Kim Kardashian West is said to be growing increasingly jealous of her sister Kendall Jenner as she thinks the 19-year-old model is stealing attention away from her.

The 'Keeping Up With The Kardashians' star is said to be becoming increasingly annoyed by the amount of attention her half-sister is receiving after she was unveiled as the face of cosmetics label Estee Lauder last month, causing a 'lot of tensions' between the pair.

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A source close to the siblings told OK! Magazine: "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.

"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."

Kendall also hit out at her older sister - who recently posed in a controversial nude photo shoot for Paper magazine - slamming her 'over-sexed antics' and branding the photographs 'cheap and nasty.'

Kim, 34, isn't the only member of the famous family who is unhappy with the brunette beauty's recent behaviour.

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The source added: "It's very ugly between these two right now, and Kendall's alienating most of the family with her self-entitled, Queen Bee attitude."

However, Kim - who has a 17-month-old daughter, North, with her husband, rapper Kanye West - has vowed to do whatever it takes to steal the spotlight away from her younger sister.

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The insider said of her decision to pose naked: "She wanted people to be in awe of her body, not slamming her for being an irresponsible mom.

"But Kim will do whatever she has to do to stay relevant."