The Greater Bay Area Costumers Guild--http://www.gbacg.org/
Dallas/Ft. Worth Costumers Guild--http://www.dfwcg.org
Costumers Guild West--http://www.cgwcostumers.org/
The Australian Costumers Guild--http://www.australiancostumersguild.org.au/
The San Diego Costume Guild--http://members.aol.com/sdcgsdcg/sdcghome.htm
BAERS- The Bay Area English Regency Society. A San Francisco group celebrating the spirit of the early nineteenth century. http://www.geocities.com/Vienna/Strasse/1815/
PEERS-Period Events and Entertainments Re-Creation Society. A San Francisco Bay Area group dedicated to remembering, researching, and re-creating the performing arts of the past. http://www.peers.org
The Society for Creative Anachronism (SCA)--http://www.sca.org
Somewhere in Time, Unlimited--http://www.costuminginseattle.com
Costumingtips.org--Carole Parker has been compiling "how-to" tips from the ICG-D list and posting them for your benefit. http://www.costumingtips.org/.
The Costumers' Manifesto--Link heaven for a costumer. You want to find more on something, this is the place to go. http://www.costumes.org/.
The Costume Page--Maintained by Julie Zetterberg. She's stopped posting updates to the site as of February, 2001, but there's still a lot there to check out. http://www.costumepage.org.
Millieux--Lauren Podolak's resources compilation. Another great portal site for tons of costuming-related web sites. http://www.milieux.com/costume/index.html.
Victriana.com--As the name says, a resource site for 19th century fashions and accessories. http://www.victoriana.com/cost.html.
The Garb Bag--http://www-personal.umich.edu/~chimera/create/garb.html.
Dragon's Guide To Philly Fabrics. If you happen to be around the City of Brotherly Love, be sure you take this list with you! http://goldapples.com/fabricguide
The Fursuit Information Exchange--http://www.fursuit.org
Costume-Connections--The official site of Costume-Con, both past conventions and future ones. Definitely a site you should check out periodically. http://www.costume-con.org/.
Cosplay.com--One of the best sites to visit the wide world of anime cosplay. http://www.cosplay.com/.
Costuming.Org--For grownups of all ages who love costuming. http://www.costuming.org/.
Costume College--http://costumecollege.org/
Costumer by Lynn McMasters--http://lynnmcmasters.com/
AHDS Visual
Arts--http://www.vads.ahds.ac.uk/collections/index.html