Cute backpacks for an 8th grade girl?

I'm desperate for a new, stylish backpack. I'm going into 8th grade and need something fun, cute and that has a lot of space. I like brands like, Aero, VS Pink, Tilly's, Hot Topic and stuff like that. It'd also be nice to have a backpack that's a cartoon character [x I think that'd be cute. Thanks for your help! And I go back to school in late August so I still have time. :D