I wouldn't mind ScarWit (not ScarJo
) to wear something like this:
Obviously it would have to be better fitting (because SMG doesn't quite look like she has boobs there) and the dress could actually be longer past her knees with slits on the side (even like an evening gown) but at least with a cape and red dress it would conjure the image from the comics without necessarily having to be exactly the same or even having to be a bustier.
If ScarWit's costume were like a ballgown (but without the huge bell shape on the bottom - I forget what it's called) then she could get away with a cape and some kind of head wear.
Or it could be a cross between a ball gown/ evening wear and what Jean Grey wore in X:TLS (but a bit sexier).