Ariana Grande is an american singer and actress from Florida. She began her career in acting on Nickelodeon playing Cat Valentine on the show Victorious and on the spin-off Sam and Cat. When the show ended in 2013 she released her first album, 'Yours Truly', which achieved huge commercial success. The 2014 follow up, 'My Everything', also had huge success. She had the most US number ones of any artist in 2014.