Selena Gomez and Joey King smile towards the camera in the schoolroom on the set of Ramona and Beezus in Vancouver early last year. The on-screen sisters passed the time during their lessons by singing “Swing Low, Sweet Chariot,” an old spiritual hymn. Selena and Joey star in the upcoming Ramona and Beezus, which follows the misadventures of young grade schooler Ramona Quimby (King). The movie debuts in theaters on July 23.