Calista Flockhart Joins CBS's Supergirl as DC Comics Character Cat Grant

Calista Flockhart has joined the expanding cast of CBS's upcoming Supergirl, TV.com has learned.

Based on the characters from the DC Comics and adapted for TV by Ali Adler and Arrow/The Flash executive producer Greg Berlanti, Supergirl stars Glee's Melissa Benoist as Kara Zor-El, an alien from Krypton who escaped to Earth during her home planet's destruction. Flockhart will play Cat Grant, a "self-made media magnate" and the founder of CatCo, the company where Kara works as Grant's assistant.

Supergirl marks Flockhart's first series regular gig since Brothers & Sisters ended in 2011. She joins recently announced cast members Laura Benanti, who plays Kara's birth mother, and Mehcad Brooks, who plays CatCo photographer James Olsen.