Even after giving birth to two children - four-year-old daughter North, and two-year-old son Saint - the reality TV star quickly resumed posting nude images of herself for all her 107 million Instagram followers to see.
But Kim is the first to admit that her smooth, blemish-free complexion isn't just down to good genes - it's also thanks to some pretty impressive laser treatments.
In fact, it was laser treatments that helped Kim to remove all traces of stretch marks that left her feeling 'unhappy' after breastfeeding North.
'After breastfeeding North, I wasn't happy with the stretch marks on my boobs, so I had the area Coolbeam lasered by Dr. Ourian,' she explained on her app over the weekend.
'It made SUCH a difference. The Coolbeam lasers are the best for removing scars, stretch marks and skin imperfections.
'They treat stretch marks by resurfacing the top layer of skin, which increases collagen regeneration. The best part is that there's very little pain and downtime!'
She added: 'I was really scared that it would hurt, but it wasn't bad at all. Afterwards, I was SO excited to see the effects on my skin.'
The mum-of-three - who welcomed daughter, Chicago, via surrogate last month - also confessed that she underwent ultrasound radio frequency to help tighten her skin after her pregnancies.
'I love ultrasound radio frequency, or USRF, for skin tightening! USRF uses ultrasound energy to increase collagen production, and to lift and tighten the skin,' she added.
'I've done these treatments on my neck, hands and stomach, but it can also be done on other areas of the body. Anyone who has had kids understands what pregnancy will do to your belly button - getting an ultrasound treatment on my stomach just totally tightened the area up.'