Ariana Grande gained fame as Cat Valentine, a cutie-pie sidekick on Victorious who spends most of her time with her head in the clouds. And now she's got her very own show! Cat moved on to join forces with iCarly's wise-cracker, Sam Puckett (AKA Jennette McCurdy). But when Ariana isn't on set bringing the laughs as Cat, she's in the studio or belting it out on stage. This gal can sing! And her perfect pipes shine far beyond her music. She also plays the voice of Princess Diaspro on Winx Club!