I'll try to make Disney/Pixar characters in young and stylish concepts, some kind of "students", something like the new Pixar's Movie: Monster University.
Aurora is a design student who loves fashion and sleep (XD) One of her best friends is Charlotte La Bouff and she usually try all Aurora's costumes. When she was young her family forced her dress like a smart and sweet princess but actually, she prefer something more urban and sassy. Say goodbye to pink and blue XD
I think Cinderella would be more suited for a design student. Cinderella had dress design books up in the attic. Aurora is more of a performing arts student, she loves dance and singing. She could be a ballerina. Love the outfit though.
While I like the design, I kind of disagree with her being a fashion designer, especially with the attitude you gave her. I see going into another field of Fine Arts like voice or, just to be ironic, textiles.