I’ve recently added one of my clothing designs to UK-based website Spreadshirt.
Check out http://www.spreadshirt.co.uk/gradius-power-up for a great range of Tee. Hoodies and more. My choice design is the black and white retro t-shirt.
This is in addition to the designs I have over at http://www.redbubble.com/people/horatiohayden/portfolio