Yes they do.
They will have lots of clothes and costumes you can use, but they also sell patterns that you can use to make your own costume... Just a pattern the cloth and some skill at sewing... I did that about 8 years ago for my ex wives son, unfortunately I am not that good with a needle and thread except for buttons (the stuff you have to learn in the army can be really random and odd)
Yes there is plain colored shirts pants as well as shoes.. great place to shop for making crafty clothes
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