The second half of the movie, Celeste (Natalie Portman) is now a pop superstar ... the score and Sia contributing several songs. "Vox Lux" opens in theaters December 7.

Academy Award winner Natalie Portman acts, dances, and now sings, too. The actress stars in Neon's upcoming musical drama "Vox Lux," and the latest trailer shows off her vocal abilities.