This fall, Supergirl will be joining the lineup of burgeoning superheroes and villains in SMALLVILLE. Supergirl is the latest DC Comics character to join the series that has previously welcomed Martian Manhunter, The Green Arrow, The Flash, Aquaman, Cyborg and Brainiac. Casting for the Supergirl role is currently underway.
A character named Kara-El has already made an appearance on Smallville, played by Adrianne Palicki. Fans will know that Kara-El turned out not to be Kryptonian at all. Thus it makes sense that they would look for a different actress to play the real Supergirl aka Kara-El.
My vote is for Kristen Bell! Now that we know Veronica Mars is not returning to The CW next season, Kristen is mostly available, as her only duties will be voicing the unseen narrator of the new show Gossip Girl.
Kristen is young, hot, and has a lot of fans (myself included). I think playing Supergirl would be great for both Kristen and Smallville!
Read: CBS PressExpress