Zooey Deschanel, Jennifer Aniston, Will Ferrell, Gwyneth Paltrow, Cameron Diaz and Reese Witherspoon are among the stars appearing in a PSA for gun control. 'Demand a Plan to End Gun Violence' was organized by Mayors Against Illegal Guns, a bipartisan coalition of more than 800 mayors. The video has already been viewed more than four-point-four-million times on YouTube. Check it out.

The video makes for great guess-the-star fun. Here's 47 of them. Did I miss any?