In an interview with the latest issue of Vibe, the rapper explained his decision, saying he wants to challenge society's perceptions of what is acceptable.

"It's like Bjork. If she wanted to pose naked, you'd be like, 'Oh, that's Bjork.'" says Kanye. "But if I wanted to pose naked, people would draw all type of things into it� I definitely feel like, in the next however many years, if I work out for two months, that I'll pose naked." - more on this story