Lili Reinhart was all smiles on Wednesday night as she attended the Vanity Fair & Instagram’s Vanities: A Night For Young Hollywood party in Los Angeles. The actress wore a gorgeous SHUSHU/TONG sheer lace white dress. Inside the event, Lili was seen with her boyfriend Jack Martin, but also with her former Riverdale co-star and best friend Madelaine Petsch and her newest Hal & Harper co-star Cooper Raiff.