I'm not really a museum goer, but hey, with a museum like this, I could stuck there for hours. Cooper-Hewitt National Design Museum in New York is surely one museum I would visit. Permanent collections include Hella Jongerius' series of 10 Sampler Blankets (pic shown here is Sampler #2), Wallcoverings by Arthur and Robert, and more. You could view the collections online at their eMuseum:
Fashion in Colors exhibition till March 26, 2006.