Irhaboggle
When Kara catches a cold that temporarily mutes her powers, she sends in her sister (drugged up on Harun-El) to act as her Supergirl stand-in. Sadly, being a hero is harder than it looks and Alex proves that she has a lot to learn before she masters the art of keeping her superpowers in check. Good thing Kara is there to nag- err, help, her on every step of the way!