Tokyo has a fabric distrcit, Nippori. One store after the other full with fabric!!! The biggest one is called Tomato, five levels. The only drawback is that it's expensive. And with the dollar-yen rate so low, it can break the bank.
Nippori Fabric District
[ATTACH=CONFIG]161236[/ATTACH]
Tomato Fabric Store
[ATTACH=CONFIG]161237[/ATTACH]