I'm definitely wanting to buy superhero stuff from online x) But from what online store do you recommend if I'm looking for Batgirl stuff? Spencers? Superherostuff? Seriously! x(
http://www.thinkgeek.com/interests/dc-comics/ http://www.shopdcentertainment.com/category/collectibles.do or support your local comic book shop and shop there.
Maybe try here? Arris Quinones from the youtube channel - Variant Comics talked about getting all of his shirts he where for his shows from here http://www.jackofalltradesclothing.com/