Three months after giving birth to son Reign Aston Disick, Mama Kourtney is back on that Kardashian schedule with a Monday morning waist training session, sharing a photo of herself on Instagram in a hot pink Waist Gang Society waist trainer. Also called corset trainers, the shapers are known for compressing the stomach to give the appearance of losing inches at the waistline. 

The 35-year-old mother of three ­looks damn good, and we’re not just saying that because she’s sitting in a walk-in shoe closet. With comments on her Insta like “Trust me it works!” and “Need me them waist training,” perhaps corset training has turned the corner away from controversy?

Her sister Kim Kardashian has also been vocal about her use of waist trainers to encourage curves …  

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

A photo posted by Kim Kardashian West (@kimkardashian) onOct 29, 2014 at 9:23am PDT

… and so has Khloe Kardashian, who posed just one week ago (also astride an enviable shoe collection) in a waist trainer. 

The Kardashians’ new favorite hobby clearly works wonders on the figure (at least temporarily), but some doctors warn about the possibility of damage to skin, kidneys, spleen and liver. Fitness experts recommend regular old working-out-and-eating-healthy to slim down.

But has fear of disaster or damage ever stopped a Kardashian on a mission? We don’t think so. 

READ MORE: Kourtney Kardashian Poses Nude and Pregnant