I gave it some thought, and yes I agree that's a hard look to pull off to be instantly recognized. But then I had an idea, and did a search. Believe it or not, they actually have Nancy Drew Fabrics out there that have images from various Nancy Drew Novel cover arts. Mostly people seem to be using it for crafty things. (Quilts, Pillows, Purses, etc.) -but I don't see why it couldn't be used to make a basic 1950's style dress! then you can accessorize it with a belt, shoes, maybe satin gloves, headband with your wig, and purse with easily accessible magnifying glass! It would be an eye-catcher for sure, and if people didn't get it right away, they'd probably guess it after seeing the pattern on the dress.
Just an idea.