Both of these sites have lots of project ideas and, more importantly, resources on materials and how to use them in unconventional ways to construct wearable electronics.

http://www.kobakant.at/DIY/

http://web.media.mit.edu/~plusea/

http://hypebeast.com/2013/9/apple-hires-former-nike-design-director-ben-shaffer

Wearable Computer-Socks Guaranteed To Be The Smelliest Computers You Own
http://www.popsci.com/technology/article/2013-06/wearable-computer-socks-guaranteed-be-smelliest-computers-you-own

LED Sound Activated E-Q Raver T-Shirt
http://www.amazon.com/Sound-Activated-Raver-T-Shirt-Large/dp/B0045LX74Q

NL WIFI T-SHIRTS
http://www.nitelifetshirts.com/nl-wifi-t-shirts/