The T-shirt site Threadless has unveiled four new shirts by comic artists Jill Thompson, Cliff Chiang, Tony Moore and Art Baltazar just in time for San Diego. The shirts can be purchased separately for $20 each or as a collector's set for $70. You can read more about how the artists became involved here.
In addition, the site has announced a new design challenge, where they ask artists to design a shirt based on a particular theme. This time around the theme is comics, and the shirt will be worn by a character in an upcoming issue of John Layman and Rob Guillory's Chew.