CareerEditGillies began her career by appearing in The Black Donnellys, Harold, and The Clique. In the summer of 2008, she was cast as Lucy in a Goodspeed production of Jason Robert Brown's new musical about growing up, 13. Later that year, 13 moved to Broadway, which made it the first Broadway production to have an all teen cast. She received the two big numbers "Opportunity" and "It Can't Be True" along with smaller parts in other songs, such as the title song, "Hey Kendra" and "Getting Ready". 13 was a huge success until its closing in January.
Gillies gained major success after landing a role in the Nickelodeon comedy, Victorious. The show premiered on March 27, 2010. Gillies portrayed the character Jade West who is the main antagonist. It ended on February 23, 2013 after four seasons. She currently plays the voice of the character Daphne on the animated series The Winx Club. Gillies has a YouTube account called LizGilliesOfficial, where she uploads covers of popular songs including: "Wild Horses" by The Rolling Stones, "You and I" by Lady Gaga, "For No One" by The Beatles, "Jealous Guy" by John Lennon, and One and Only by Adele. She is currently on A TV Show called SD&RR. She plays the role of Gigi, the daughter of a rockstar.
She is best friends with Ariana Grande who played Charlotte in 13. She dated 13 co-star Eric Nelsen for a while.