Ariana Grande's music career also gained momentum during this period. Her debut album, "Yours Truly," was released in 2013, when she was 20 years old. The album debuted at number one on the US Billboard 200 chart and spawned hit singles like "The Way" and "Baby I."
So, Ariana Grande was around 14 years old when she first gained prominence as an actress on "Victorious," and she was 20 when her music career took off with the release of her debut album.