Ariana Grande stars in Nickelodeon's "Victorious" as Cat, an eccentric and talented student with pink hair at Hollywood Arts High School. Ariana Grande is best known for her star turn in the Broadway production of "13, The Musical," which is about a 13-year-old boy who moves from New York to Indiana and tries to fit in and get the "cool" crowd to come to his Bar Mitzvah. Originally from Boca Raton, Florida, Ariana Grande has been singing in musicals and concerts around Florida for most of her life. Ariana Grande recently moved to Los Angeles.