In 2010, Gillies was cast as bad girl and occasional antagonist Jade West in the Nickelodeon television show Victorious, a sitcom revolving around teenagers at a performing arts high school in Hollywood. This marked her second time working alongside 13 co-star Ariana Grande. Regarding her Victorious character, Gillies said "It's wonderful. I love playing Jade. I always say she's not so much the 'mean' girl, but the 'bad' girl in so many ways. She has a lot of human qualities to her – she's not just completely sociopathic. She's sweet with her boyfriend. It's nice to play a character with some depth. " The show premiered on March 27, 2010. During her time on Victorious, Gillies was featured in several songs on the soundtracks Victorious and Victorious 2. 0, including "Give It Up" (duet with Ariana Grande), and "Take a Hint" (duet with Victoria Justice). She also wrote and recorded the song "You Don't Know Me" for an episode of Victorious, and it was later featured in Victorious 3. 0.