While international cinephiles are buzzing about the must-see movies set to debut in Cannes, we’re dying to see what the stars will wear at the world’s most glamorous film festival. Cate Blanchett, Michelle Williams, Gemma Arterton, Carey Mulligan and Naomi Watts are expected to ascend the grand steps of the Palais des Festivals for this year’s gala premieres, so we expect no shortage of head-turning gowns. Plus, Jennifer Lopez and Diane Kruger have already been spotted on the French Riviera, which could mean they’ll add to the star style power at the annual amfAR Cinema Against AIDS gala and lavish fetes hosted by Chopard and Gucci. Come back to InStyle.com for your daily dose of glamour from Cannes starting tomorrow, and help us decide who wins the award for best dressed when the festival wraps up on May 23rd!