words // Brennan Hiro Williams

Naomi Campbell, Heidi Klum and Eva Mendes are just a few of the celebrities who appeared, sans clothing, on limited edition Marc Jacobs t-shirts over the years, all part of the designer's "Protect The Skin You're In" campaign. 

This week, three animated celebrities join that list: Eric Cartman, Randy Marsh and Leopold "Butters" Stotch.

The South Park trio appears on a new series of charity tees from Marc Jacobs, all benefitting the New York University Skin Cancer Institute. The tees convey a simple message -- "Protect Your Largest Organ" -- promoting skin cancer awareness and education.

The Marc Jacobs x South Park Charity "Skin" tees are available now at Marc Jacobs retail locations, including online at Marcjacobs.com.