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Kylie Jenner Hops on the Waist-Training Bandwagon Just Like Her Three Older Sisters!

Turns out, Kylie Jenner wants a ridiculously tiny waist just like her three sisters!

The 18-year-old channeled siblings Kim, Kourtney and Khloé Kardashian by posting a selfie in a waist-trainer.

RELATED: Kourtney Kardashian Helped Kylie Jenner Drop 15 Pounds! — Here's How

She captioned the shot, "Just about to head out for a morning walk before my interviews and I love a little extra help. Thank you @premadonna87 and @waistgangsociety for my waist trainer I'm officially obsessed after seeing how bomb my sisters look. It also helps with my posture :). Get yours at whatsawaist.com."

No doubt she got paid a FORTUNE to advertise this particular brand!