Gemma was the other major L’Oreal Ambassador to hit la Croisette yesterday, and she did it in her usual Louis Vuitton. There is a LOT of white, and black, and some black-and-white, in this post — with a dose of the Ukrainian flag hues to liven things up.

[Photos: David Fisher, Matt Baron/BEI/Shutterstock, JEAN MARC HAEDRICH/SIPA/Shutterstock, Alberto Terenghi/ipa-agency ne/Shutterstock]