Rumors first started when the pop star posted on Facebook that he is "working on something big right now in Europe...He is so hot right now."
A source told E! News, "He's definitely interested in movies and starting a film career."
Also set to reprise their role in the film is Will Ferrell and Stiller's wife, Christine Taylor. Fred Armisen, Penélope Cruz, Kyle Mooney and Billy Zane are a few of the newest actors announced that will join the cast.