Kayla Oaddams/WireImage Leonardo DiCaprio's girlfriend Vittoria Ceretti quietly supported her man at the world premiere of his latest movie, One Battle After Another, on Monday, September 8. The Italian model, 27, was spotted in attendance at the TCL Chinese Theatre in Hollywood, looking glamorous in a long white dress with a thigh split. Ceretti had her hair slicked back in a ponytail and completed her look with black heels, per footage shared by Entertainment Tonight on social media.