"Everyone looks natural except for Kim," one person commented.
Others thought the model's had been airbrushed too.
"This isn't that impressive dudes. Still no stretch marks, no cellulite, no scars or bumps or discolouration or anything besides smooth perfect skin, That, among other problems, just proves we still aren't where we should be in representing the female body in media," another added.
"I understand you're trying to spread body positivity and inclusiveness, but why airbrush all these beautiful women's bodies? If you really want to stand up for women everywhere, then please stop photoshopping all these women," one fan wrote.
In the caption, Kim wrote that her fans and followers were a "huge inspiration" and she was "so grateful they shared their ideas for a new brand name".
"Im excited to announce the launch of @SKIMS Solutionwear™ coming September 10," she continued.
"I love the idea that the pieces will be the closest thing to someone's skin, skimming with amazingly soft and supportive fabrics which accentuate the best parts of our bodies."
Last month Kardashian was forced to change the name of her shapewear line after receiving a torrent of criticism over calling it Kimono.
"My brands and products are built with inclusivity and diversity at their core, and after careful thought and consideration, I will be launching my Solutionwear brand under a new name," Kardashian said.
The reality star was "always listening, learning and growing" and as such she "appreciated" the opinions of others around her.
"When I announced the name of my shapewear line, I did so with the best intentions in mind," Kardashian said.
The backlash against Kardashian's shapewear name even got its own hashtag #KimOhNo and prompted the mayor of Japanese city Kyoto to pen Kardashian an open letter explaining why it was so offensive.
"Kimono is a traditional ethnic dress fostered in our rich nature and history with our predecessors' tireless endeavours and studies, and it is a culture that has been cherished and passed down with care in our living," read an excerpt of the letter shared with Fox News.
"Also, it is a fruit of craftsmanship and truly symbolises sense of beauty, spirits and values of Japanese."
