Let the Spring 2011 rumors begin swirling... An educated tipster informs us that teen fashion editor Kristin Prim and up-and-coming pop star Sky Ferreira have been tapped to star in Diesel's Spring 2011 ad campaign. We've checked into it, and our sources have corroborated the claim. (We're still waiting to hear back from Diesel.) Prim and Ferreira, virtual unknowns beyond a certain set, are interesting choices to lead a campaign. However, we're betting Ferreira will be much bigger by spring than she is now. And Prim's appointment proves that the ingenue blogger/editor isn't going away anytime soon. Whether or not Diesel is sticking with the "Be Stupid" slogan remains unclear.