Melissa Benoist, best-known as Marley Rose on Glee and Nicole in the movie Whiplash! She's not blonde! This is easily fixed! But come to think about it, why does Supergirl have to be blonde? It's not like Superman is blonde or anything. Anyways, this casting for the potential CBS series works for us.
Here's the show's description, courtesy of Deadline:
Based on the characters from DC Comics, the project, from Warner Bros. TV and studio-based Berlanti Prods., centers on Kara Zor-El (Benoist). Born on the planet Krypton, Kara Zor-El escaped amid its destruction years ago. Since arriving on Earth, she's been hiding the powers she shares with her famous cousin, Superman. But now at age 24, she decides to embrace her superhuman abilities and be the hero she was always meant to be.
I still have no idea how this show is going to handle Kara's more famous cousin — I can't imagine he'll be a very present character on the show, but I also can't imagine this series will actually tie-in to the DC movie universe. Still, with Arrow and The Flash's Greg Berlanti at the helm, I'm not that worried. Just confused.