Is she getting thinner or what she's wearing?

On Thursday, Kim Kardashian gave the world a peek at her progress since giving birth to her baby girl North last year when she posted a pic of herself on Instagram sporting a super tight corset along with the caption, "#hourglass #waisttraining #nophotoshopnecessary @premadonna87."

The 33-year-old has already lost 7 lbs. thanks to her low-carb diet but her handy dandy midriff tool seems to be the real trick.

The Whats A Waist device Kim's rocking is not your everyday corset as it has been advertised to reduce waistlines up to seven inches and can even change your body shape for only $143.50!

Wonder if anyone else is following her trend?