Check out a preview for Friday's brand new episode of "Victorious."
In the new episode airing on Earth Day, Tori (Victoria Justice) will do ANYTHING to win a private Ke$ha concert and get out of being Trina's assistant for a whole month. Ke$ha guest stars as herself.
The episode airs at 8pm EST on Nickelodeon.
(Photos: Lisa Rose/Nickelodeon)