The filmmakers behind Entourage clearly value authenticity.
Kevin Connolly (Eric) and Emmanuelle Chriqui (Sloan) were spotted on the red carpet, where they took part in a mock interview with Carson Daly.
Adrian Grenier, Jerry Ferrara, Jeremy Piven and Kevin Dillon were also at the event, arriving early to film scenes at the Beverly Hilton Hotel before the rest of the throngs got there. The castmembers were caked with heavy makeup.
Warners will release Entourage on June 5, 2015.
Stacey Wilson contributed to this report.