* Stylists - they buy for a client (celebrities, wealthy people) and send back things that don't look appropriate
* Entertainment - TV and movies regularly buy a lot of clothes and return most of them
* Renters - people who may spend tens of thousands of dollars per year but only have $2,000 in lifetime sales -- everything else is returned
* Legitimate customers - they might buy two or three of the same item to find the one that fits
There are things we do to help with the last case and to help people figure out what will fit before they purchase the item, and those have been proven to work. Stylists and Entertainment buyers are tolerated. Renters get picked out with data analysis, but the queries tend to be expensive in time and resources and require human discretion, something missing in the Best Buy story.