Calista Kay Flockhart (born November 11, 1964) is an American actress, known for playing the title role in the Fox television comedy-drama series Ally McBeal and for playing Kitty Walker McCallister on the ABC drama Brothers & Sisters. Since 2015 she has been cast as Cat Grant on CBSs Supergirl. During her career, she has received a Golden Globe Award, a Screen Actors Guild Award and three Emmy Award nominations.