I’ve planned a surprise trip for my oldest granddaughter’s 13th birthday, just she and I.

Flying down on her birthday, 9/17, and attending the 9/18 party.
The whole family attended in 2018, our last trip to WDW, and had a blast!
I want to do costumes but I’m having a hard time coming up with a duo for a silver haired old lady and a brunette teen! Would it be weird to wear Star Wars themed costumes??? We’re doing Galaxy’s Edge the next day Disneybounding as General Leia Organa and Rey and though we might do the same for the party but not sure if Star Wars in the Magic Kingdom would be frowned upon. Open to any other ideas that don’t involve either of us wearing a wig.