The 32-year-old actress attended the opening ceremony and premiere for "La Tete Haute" ("Standing Tall") looking like royalty dressed in a jade chiffon Gucci gown with embellished floral detail along the neckline. Her glam squad -- hairstylist Vernon François and makeup artist Nick Barose -- added the finishing touch with a voluminous bun and fuchsia lips.
"Wearing strong colors doesn't have to be loud, sophistication can be fun too," said Barose. "It's all about having fun with colors but keep it balanced from looking overdone."
Soak in Lupita Nyong'o's Cannes beauty look below, and see which other celebrity looks we couldn't get enough of this week.