Margot Robbie who plays “Sharon Tate” Margot Robbie Wows as Sharon Tate in New Once Upon a Time in Hollywood Trailer Quentin Tarantino's new film Once Upon a Time in Hollywood premieres at the Cannes Film Festival on Tuesday, Ahead of its world premiere at the 2019 Cannes Film Festival, Quentin Tarantino has unveiled the first full trailer for his anticipated 9th film, Once Upon a Time in Hollywood. The film, which stars Leonardo DiCaprio, Brad Pitt, and Margot Robbie as Sharon Tate, is Tarantino’s first film premiere at Cannes since Inglourious Basterds in 2009, where Christopher Waltz won for Best Actor. The film will debut in Cannes 25 years after his classic Pulp Fiction won the Palme d’Or, the festival’s top prize. DiCaprio, 44, plays actor Rick Dalton, while Pitt, 55, stars as his longtime stunt double Cliff Booth. The two are struggling with a changing Hollywood landscape at the height of hippy Hollywood, all exemplified by Dalton’s next door neighbor Sharon Tate, played by Robbie, 28. RELATED: Leonardo DiCaprio Unveils First Poster for Once Upon a Time in Hollywood with Brad Pitt