You may know Ariana Grande became a household name after acting and singing in the hit TV show Victorious . But did you know that she: - called Nickelodeon studios when she was four years old to try to get a role on the show All That ? - performed in a Broadway musical as a young teen? - is often compared to superstar Mariah Carey? Want to know more about this talented star? Read on to learn all about Ariana's life before stardom as well as her rise...