Green Day frontman Billie Joe Armstrong is set to star alongside Leighton Meester in an upcoming indie drama called Like Sunday, Like Rain. The film tells the story of a struggling musician, played by Meester, who becomes the guardian of a 12-year-old music prodigy. Armstrong will play Meester's boyfriend in the movie. Filming for Like Sunday, Like Rain is underway in New York. Armstrong has appeared in minor roles in other movies including Riding in Cars With Boys and This Is 40. This December, he'll also make a cameo in Anchorman: The Legend Continues.