Joanna worked with fashion photographer Rankin for the shoot.
"You know, the only reason I did it is because one of the most amazing photographers – Rankin," she told Access. "He's one of the top photographers in the world."
And Joanna said her pictorial in the magazine – which is reportedly not a nude spread — is very special.
"It's all [done] with taste, class," she said. "It's very artistic. It's going to take Playboy to a level they've never gone before, so it's going to be really classy and beautiful."
Joanna previously appeared on the cover of the magazine in July 2005.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: 'Dancing With The Stars' Season 9: Week 3 Highlights
PLAY IT NOW: 'Dancing' Recap: Costly Mistakes For Mya & Joanna Krupa? (October 19, 2009)
PLAY IT NOW: 'Dancing' Recap: Derek Hough Goes Shirtless (October 12, 2009)