KIM Kardashian has showcased her bare backside in sheer underwear while posing for photos for her new Skims campaign.

The Kardashians star is the founder of the lingerie brand and regularly models its sexy collections.

On Wednesday, Kim , 44, showed off the company's newest line, New Essentials, which features a black Milky Sheer String Bikini, and a matching Cotton Jersey Long Sleeve T-shirt.

In the photos posted to Skims ' Instagram, the Hulu star positioned her back to the camera, putting her hourglass figure and nearly bare booty on display in the tiny bottoms and cropped top.

She peeked over her shoulder in one snap, capturing her full face of makeup and dark locks slicked back in a low bun.

A second pic showed a close-up of Kim's butt in the completely see-through pantie

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