Last night the celebrity elite came together on the Côte d'Azur for amfAR's annual affair in Cannes, the Cinema Against AIDS Gala. The glamorous event, now in its 22nd year, was held at the Hôtel du Cap-Eden-Roc, marking the final run of the Cannes Film Festival while raising money for HIV/AIDS research. From fashion royalty (ahem, Tom Ford) to rock royalty (hi, Zoe Kravitz!), and everyone in between (Leo DiCaprio), click through for the best A-lister moments on Instagram.