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Oscar winner Natalie Portman takes on the challenge of playing a pop star in her new movie, "Vox Lux." She talks about working with Sia and once again teaming up with her choreographer husband.\n\nCheck out our other podcasts: http://bit.ly/2eBJMNa\n\n* ABOUT PETER TRAVERS: Peter Travers an American film critic, author and journalist. For some 25 years, Travers has written for Rolling Stone. He personally screens nearly 400 movies per year and releases weekly reviews. Travers is the nation's most blurbed film critic, according to eFilmCritic.com. Travers is also host of ABC's "Popcorn With Peter Travers," where he interviews actors, directors and Broadway performers about their roles and their lives.\n\nPopcorn on Twitter: http://abcn.ws/2gGYRiD\nPopcorn on Facebook: http://abcn.ws/2f3iHDw\nPopcorn on YouTube: http://abcn.ws/2gyswtx\nPopcorn on Instagram: http://abcn.ws/2fC0Ak2\nLearn more about your ad choices. Visit podcastchoices.com/adchoices