Typically, girl!Cas? Not my thing. But I read a really good fic featuring Cas in a female vessel and it got me wondering, what would she look like?
...
Naturally, I started thinking about this too hard.
I came to the conclusion that anyone chosen to represent girl!Cas would have to look like Misha Collins a bit, just on principle. After many hours of grueling, I decided on Rachel McAdams, and I'm-ma tell you why.
Actually, no, I'm-ma show you why:
It's the damned smile. Also the eyes and hair sorta match, but that damned smile.
Of course, I leave this open to interpretation. It is not something I wish to further delve into. Just a thought.