Is Ariana Grundy in the movie Sam and Cat?

Ariana Grande does not play a character named Ariana Grundy in the show "Sam & Cat." Instead, she stars as Cat Valentine, a character she originally portrayed on "Victorious." "Sam & Cat" is a Nickelodeon series that features her alongside Jennette McCurdy, who plays Sam Puckett. The show aired from 2013 to 2014.