It was a star-studded event at the Los Angeles premiere of “Once Upon a Time In Hollywood”. Co-stars Margot Robbie, Brad Pitt, Leonardo DiCaprio, and director Quentin Tarantino hit the red carpet along with other celebs, including Chris Hemsworth, Snoop Dogg, and a surprise appearance by Britney Spears. Noticeably absent was Luke Perry, whose role in the film will mark his final performance.