Fabric and Sewing Supplies in New York:

34th street and 42nd street and 9th avenue and 7th avenue is the garment district)

B & J  Fabrics
Daytona Trimming
Mood Fabrics
PS Fabrics: 359 Broadway
metalliferous

The Making of Wearables:

ITP Soft Club
kobakant: how to get what you want
High Low Tech 

Wearable Blogs:

fashioning technology
wearables.com