No a personal shopper won't do that. I had also thought the same thing from a post here but was misinformed.

If you have an extra AGOT outfit box laying around, I would send your RFF meet outfit back in that. Just fill out the back of the order form for an even exchange for another outfit that is $26.

If you put it towards something more than $26 just follow the rest of the form- it tells you how to figure the shipping and tax if you owe them money on the exchange.