amFAR's annual Cinema Against AIDS gala is one of the most exciting events — at least fashion-wise — during the Cannes Film Festival. And this year is no exception. The red carpet festivities just kicked off in Antibes, France, with stars like Jennifer Lopez, Kate Beckinsale, Naomi Campbell, Camilla Belle, and Rachel Bilson turning up in delectable gowns and dripping jewels. Model Dree Hemingway is a newcomer, but she delivered majorly in her funky nude and neon yellow Valentino confection. This is one red carpet event you don't want to miss.