From Deadline.com:
Calista Flockhart is returning to tv as she has been cast as Cat Grant in Supergirl.
Deadline is reporting that Calista Flockhart will play Kara’s (Supergirl) boss Cat Grant.
Ally McBeal and Brothers & Sisters star Calista Flockhart is returning to network television with a co-starring role opposite Melissa Benoist in the CBS pilot Supergirl. She will play Kara’s boss Cat Grant in the project, reuniting with Brothers & Sisters executive producer Greg Berlanti.
Not sure she has the, um…, chops, to play the character, but there is always special effects.
Cat Grant first appears in Adventures of Superman #424 which is a super cheap buy.