Deadline is reporting that Nashville star Laura Benanti has been cast to play Alura Zor-El, the birth mother of Kara, aka Supergirl (Melissa Benoist). The article provides a short description of the character:
A strong noblewoman, Alura sends Kara to Earth to escape Krypton’s destruction. Her wisdom and guidance echoes across space and time, proving invaluable on Kara’s journey toward becoming Supergirl.
Warner Bros. TV and Berlanti Productions, best known for bringing successful DC properties Arrow and The Flash to the CW, are partnering on this Supergirl project for CBS. The project centers around Kara Zor-El (Benoist), who escapes the destruction of Krypton and arrives on Earth where she finds out that she has the same powers as her now famous cousin, Superman. As the years pass, Kara soon learns to harness her powers and use them to become a hero in her own way.
Since the show takes place after the destruction of her home planet, my guess is that we will see Laura Benanti's appear in some hologram messages sent along with Kara on her escape much in the same vein as Kal-El. Only time will tell though.
No word on the premiere date for the pilot, which was written by Ali Adler and Greg Berlanti, the producers on the show, along with Sarah Schechter and Warner Bros. TV.
Look for Supergirl to appear on the CBS lineup in the coming months