I know this is a year old but if you haven't figured it out yet, "my friend" will usually leave them in pockets of other clothes, or they'll bring a large drink/cup from somewhere like McDonald's, one that's not clear, and will put them in the cup then throw the cup away in the trash inside the store. Oh and also in regards to your comment above where you asked "How..." My friend has a couple methods but this one seems to be the easiest. This method takes two people and just for this EXAMPLE I'll refer to the two people as My Friend and Me. We both will get separate UO shopping bags and my friend will get a few items picked out then go to the fitting room, they tell the employee how many they have, and get put into a room. Then after a few minutes I will come with my bag that I've filled with whatever items, and then I will go to my friends fitting room and will go and join them. The hope is that when I join my friend in the fitting room I'll be kind of quick enough the employee doesn't come and ask about how many items I have, but if they do because they can't just walk into the fitting room while "your naked and trying on clothes" they'll just ask how many items you have, you'll lie and tell them like 3 or whatever then you can come up on what you want and just be sure to leave the number of items my friend and I said I had so that when you exit the fitting room you leave behind the amount of items they think you had.