The social media star "broke the internet" in November 2014 by appearing nude and greased-up in Paper Magazine.
"I looked at it as an art project for me, this was going to make me feel confident and feel good and it taught me to do what you want to do," she said on Channel 10's The Project.
"Everyone should do what they're comfortable with. I'm never one to preach but I felt really positive and really good about myself. I loved the photos, I did it for me."
Kim's husband, rapper Kanye West, said he's proud of his wife's figure and nude selfies.
"I love her nude selfies. Like, I love the ones from the side, the back ones, and the front," he told Icons magazine's September issue.
"I just love seeing her naked; I love nudity. And I love beautiful shapes. I feel like it's almost a Renaissance thing, a painting, a modern version of a painting. I think it's important for Kim to have her figure. To not show it would be like Adele not singing."