Where is the "other" option on the poll. My 6th grade girl gets most of her clothes from Target, occasionally Kohl's and a few items now and then from Wal-Mart. We don't shop at any of the places on your list - all too expensive. We see no point in spending that kind of money on stuff she'll outgrow in a few months.
I'm impressed that you know where her clothes come from. DH might be able to guess, but he wouldn't be certain. Lucky for him, I'm thrifty.
To the OP, how about cash? I've decided on giving cash instead of gift cards to teens/tweens. They can use it wherever they want to and aren't restricted like a gift card. I hate when my kids have a $20.00 gift card and only spend $18.00 of it. I've been known to give these leftovers to the next person in line. Depending on the store, I may not be back for a long time.