Rossmac's post about terrain cloths got me thinking about my own cloths and then buying fabric in general.
Here's a couple of Canadian cultural icons to guide you through how to buy fabric. For Yanquitos, Don Cherry is an ex-hockey coach and now TV commentator who combines John Madden's passion for his sport with Rush Limbaugh's sensitivity while Rick Mercer is a more left wing and funnier John Stewart. Sorry I can't think of appropriate British equivalents.
Note that Don has a sewing club membership card to get a discount.