Nice shirt!
Via Official Pix:
The POP! Icons series in Funko's ever popular POP! Funko line is about to get a lot cooler. Coming this Fall, a new Limited Edition Mark Hamill vinyl figure and a killer Mark Hamill as The Joker variant will be blasting their way into our online store! Look for both signed and unsigned purchase options. Pricing and availability are still pending, but we're very excited to be able to offer these to everyone!
Shirts available here: LAVAWEAR