In turn, actress Amber Rose accused her critics of "slut-shaming," or unfairly lashing out at Kardashian-West for being too sexual.
In a new interview with "Nightline," Rose said she has also experienced the phenomenon so, as a result, felt compelled to speak out.
"I thought she looked beautiful. I'm a mom. I know how hard it is to like work out and try to get your body back but at the same time, embracing the fact that your body does change after you have a baby," Rose said. "After carrying a baby, I just think it's really cool and I've seen that she's been getting a lot of [flack] for it and I didn't think it was fair."
Rose, 29, who previously dated Kardashian West's husband, Kanye West, considers the reality-TV star a friend, though she explained that her words were meant to defend all women. In Hollywood, she said, a double-standard exists in which overtly sexual women are chastised in a way that their male counterparts are not.
"If Brad Pitt posted a picture like that, everyone would praise him," she said. "If any sexy guy posted a nude picture with a little black strip over his private areas, everybody would be like, 'Damn, he's hot, he's sexy looking. Look at that body!'"
Rose believes that the problem is partially rooted in the idea that celebrities should be role models. In reality, she said, Kardashian-West should only be concerned with her own children: North, 2, and Saint, 3 months. Everybody else, she continued, should just try to be supportive of one another.
"Just try to be as positive as possible," she said, "and you can make a change."