A whole bunch of celebrities have collaborated with Marc Jacobs on his t-shirt campaign to benefit the Interdisciplinary Melanoma Cooperative Group at New York University, popularly known as “Protect the Skin You’re In.” The shirts feature a naked celeb clutching his or her genitals–past participants have included Marisa Miller (up there), Victoria Beckham, Dita von Teese, and Naomi Campbell. The latest round of nude volunteers aren’t actors or models, though, they’re cartoons: Eric Cartman, Randy Marsh and Butters Stotch of South Park. Yes, the beloved characters have lent their doughy naked bodies to Marc Jacobs:

Jacobs is a big animation fan and has already been satirized on South Park. The $35 shirts are available online and at Marc by Marc Jacobs boutiques.

Sadly, we won’t get to see Kenny under his hood.