Model Kendall, 18, stripped off to be photographed by Russell James for his new book, Angels.

PICTURE: KIM KARDASHIAN AN APPARENT DIG AT BEYONCE AND JAY Z WITH 'ELEVATOR KISS' POST

In the snap, a sultry Kendall covers up with just her arms as she gazes at the camera, looking so much older than her actual age.

Proud big sister Kourtney shared the shot on Instagram, calling Kendall her 'muse'.

Aspiring supermodel Kendall's other big sis Kim, 33, bared all for GQ this month as she was named her woman of the year.

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Kendall recently admitted she 'begged' Kim to stay away from her first catwalk show as she didn't want her to steal the spotlight.

Speaking to Style magazine, Kendall said: "I am doing this for me, on my own. God, I love my family but this is my thing, it's me."

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It was recently reported that Kendall wants to move away from her famous family's reality show, Keeping Up With The Kardashians, and was even considering quitting it altogether to focus on her modelling career.

She is also said to have dropped 'Jenner' from her name when modelling, so she is not judged on the basis of her famous family.