Look at me, I'm a designer!
You can design for your avatar in your favorite virtual world, and you can do the same for your tween girl self at Fashionology LA. Not only that, you can model it and show your creation and yourself on large screens throughout the store. As soon as you grow out of that, you'll grow into your personally-designed Lill Street bag.
Kids always say "I do it self!" The business of creating a platform and letting the young customers create content is not just for them, but they'll lunge for it fastest.