Ariana Grande

Ariana Grande-Butera (born June 26, 1993), known professionally as Ariana Grande, is an American actress, singer, and dancer. She made her performance debut on Broadway at age 15, playing the role of Charlotte in 13 in 2008. Recently, she has gained attention for her role as Cat Valentine on the Nickelodeon sitcom Victorious, which she will reprise in Sam & Cat, a spinoff of iCarly and Victorious.

source: Wikipedia