I assembled this costume for SDCC 09. Super easy to wear. Not too hot. I scared children. Plus, the whole costume fits into it's own duffel bag!
Tyler Haslett's mask was the one I used. Resin. Heavy, but I adjusted the elastic and added foam to fit it better. Wore fine for hours.
I think my bag was one of these:
http://www.thepinkmonogram.com/php/first.php?ACT=1164
I added some foam to the outside compartments to square it up, the Joker's bag is very rectangular. I also added some cardboard to the sides of the middle compartment. Helped immensely.
Gloves were unlined leather, bought from ebay.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380063913818&_rdc=1
Fit perfect. Looked great. Sizing chart on their site worked like a charm
The shirt I picked up at a clothing store in Canada. It's tonality was perfect.
I don't remember the name of the store, but it was in Montreal.
The suit I got at a great second hand clothing store in San Francisco.
Note the 2 buttons, the narrow lapels and the lack of stripes. I paid 40 bucks for that.
These were the sneakers I used:
http://www.zappos.com/product/7517178/color/18