10/30/2014 11:19 EDT | Updated 10/30/2014 11:59 EDT

Kim Kardashian Flaunts Her Gorgeous Figure In Waist Trainer

Corsets are a girl's best friend (according to Kim Kardashian, anyway).

On Wednesday, the style guru showed her Instagram fans how she keeps her hour-glass figure: with a waist shaper, of course!

The 34-year-old posted a selfie that showed the beautiful brunette flaunting her fit bod in black leggings, a revealing tank top and the blue "corset" and captioned the pic, "I'm really obsessed with waist training! Thank you @premadonna87 for my new waist shapers! #whatsawaist."

I'm really obsessed with waist training! Thank you @premadonna87 for my new waist shapers! #whatsawaist

A photo posted by Kim Kardashian West (@kimkardashian) on

This isn't the first time the Vogue cover girl has used the product. In August, North's mom posted a pic of herself wearing a shaper, which gave her a svelte waist.

However, there are critics of the device who claim that it can cause serious damage.

"Medically, it doesn’t make sense that cinching your waist tightly will make it permanently smaller," Mary Jane Minkin, a clinical professor of ob-gyn at Yale School of Medicine told Women's Health. "Once you take the garment off, your body will return to its usual shape. It’s also uncomfortable, restricts your movements, and if you wear it really tight, it can even make it difficult to breathe and theoretically could cause rib damage."

Better keep that in mind before you think about pulling a Kardashian!

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