You can't.
You have to ace the three Savannah levels to get the full costume
On Ebay :)
newyork, all costume leap cheap that sore 15th steet
A cheap Batwoman costume can be found on eBay or on Amazon. They can also be hired cheaply if it for a one off party from many stores that do costume hire such as fancydress.
http://www.dizguise.com
Cosplaytrader.com is a good start! Alright you can make a costume or go to the good will and find a nice costume or you can find some clothes that would go with you costume a kid i know did that and went as a pirate!
If you want a cheap, used Minnie Mouse costume, I would suggest Ebay. Amazon.com and a local costume store are not bad ideas to check out as well. Good luck!
a circus
Captain Hook, Charlie Chaplin, cheerleader, chef and cowboy are costume ideas. Additional costume ideas include cop, convict, clown, circus ringmaster and chimney sweeper.
You can find good adult costume for cheap at walmart, K-mart, Target and other stores. You can find them online at websites like ebay.com,amazon.com, and partycity.com
You can find cheap halloween costumes for infants at ebay.com. You can also get one for free, just pay the cost of shipping, at thredup.com.
Go to Costumeoutlet.com.