Samantha Who? Spoilers: Regina's Sister Cast

Forget Samantha Who?

How about: Regina's sister who?!?

In an upcoming episode of this great sitcom, Michael Ausiello reports that fans willl meet Regina's estranged sister, Amy. She's a glamour gal that quickly bonds with her impressionable amnesiac niece.

And the lucky actress that has landed the role? Christine Ebersole (pictured).