http://www.cryoflesh.com
http://www.plastikwrap.com
http://www.allycatmetalware.com
http://www.steampunkcouture.com/
Looking for interesting clothing online is hard. There's a lot of garbage and google is not usually very helpful. Lists of links like http://www.batgearbeyond.com/ tend to be either redundant or too large to be useful.
For boots, I'd recommend either http://www.pennangalan.com/ or the more extensive http://www.pleaserusa.com/
Happy Shopping...