Kourtney Kardashian Snaps Waist-Training Selfie, Shows Off Tiny Figure Six Weeks After Baby

Gettin' it right, gettin' it tight…with my waist shaper! #waistgangsociety @premadonna87 @pre_shop

Une photo publiée par Kourtney Kardashian (@kourtneykardash) le 30 Janv. 2015 à 12h36 PST

Waist not! Kourtney Kardashian took a cue from sisters Kim and Khloe Kardashian and jumped on the waist-training bandwagon, sharing a selfie of her progress via Instagram on Friday, Jan. 30, just a little over six weeks after giving birth to son Reign Aston Disick.

The Kourtney & Khloe Take the Hamptons star, 35, showed off her tiny frame and slim waist while wearing a black waist shaper over black leggings and a long-sleeve black top. She appeared to be standing in her closet, next to several rows of platform heels.

"Gettin' it right, gettin' it tight…with my waist shaper!" she captioned the photo, hashtagging it with the company's name, "#waistgangsociety" and tagging @premadonna87 and @pre_shop.

Both accounts re-grammed the pic on their pages, adding their own comments. "@kourtneykardash just had a baby. I don't know a sexier milf," @premadonna87 wrote alongside the shot. "All yo mama ever made was trophies. 

Kourtney Kardashian
Paul Zimmerman/Getty Images

Khloe, 30, was the first of her sisters to post a waist-training selfie on Insta. She shared a picture of herself looking svelte in a black waist trainer in May, and then again in November. Kim, 34, modeled a purple version last August, as well as a blue version in October.

PHOTOS: Kim's best booty moments

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