The CW's Supergirl might be ending after the upcoming sixth season, but fans don't have to wait too long to see the character back on their screens, following yesterday's news that Sasha Calle has been cast as Kara Zor-El in The Flash, which is finally getting underway in the United Kingdom having spent years stuck in development hell, with the Scarlet Speedster's solo debut set to hit theaters in November 2022.