I have a gender creative DS6 who loves the princesses. How do the CMs deal with this at the Bibbity Bobity Boutique? Because I know he would love a make over!
I have to believe that you're not the first parent with this question. I would call BBB and ask them directly. As the PP said, Disney is incredibly good at customer service.
And I too would love to see a photo post-makeover if you and your son are comfortable posting one!