There is no law against returning clothers to a retailer. A person can return an item everyday to any retailer and there is no law against that. Retailers try to scare us into thinking that we cannot make returns.
I hate the looks when I have to return an item/gift without a receipt. If a retailer has a customer that makes many returns, they cannot prove that the return is illegal unless they see the person take the item and then return it.
There is such a thing called proof. You cannot go to a police station and say "Excuse me officer, but I have a customer that makes excessive returns to our store without a receipt, can you please arrest that Person"?
The officer will look at the employee (lP) and say, "Well, what should I charge them with, making many returns?
A department store cannot do anything to you for making multiple returns in their store, unless they have proof that each item that you return, was either stolen, or obtained at a lower price. Thats called proof.
The only thing they can do if they have you on file for mulitple returns is deny you anymore returns.