The 'Skyscraper' singer tells the new issue of Allure that Kim, 34, as made big butts and curves more acceptable.
Demi, 22, says: "Kim Kardashian, say whatever you want about her, but she has revolutionized what's accepted with curves these days.
"I really learned to accept my body when the trend started becoming less about super, super skinny models that was completely unattainable for anyone to have."
Demi has previously described Kim as a "great friend" and even went so far as to joke last year that Kim's hubby Kanye West better treat him right or she'd go after him!
This isn't the first time Demi has credited Kim for helping make curves sexy.
In a recent interview with Fitness magazine, she hailed Kim, Beyonce, Jennifer Lopez and Iggy Azalea as role models.
"It's so nice to look around and see women with hips and a butt, like Iggy Azalea and Jennifer Lopez," she said. "They have great figures, but you know they also work really hard for them and don't try to hide their curviness."
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