Meet SuperGirl:
Laura Vandervoort, who was on the show Instant Star, will play Kara/SuperGirl on Smallville this season.
-in other casting news, Jason Dohring(Logan, Veronica Mars) is now going to be on the show Moonlight playing a vampire, and Missy Peregrym(Candice, Heroes) is replacing Nikki Reed as the female lead on Reaper.