The chicest hairstyle to hit the red carpet in Cannes is also one of the simplest. Ponytails are getting glamorous at the film festival, with stars such as Diane Kruger and Freida Pinto showcasing decidedly elegant versions of the classic style. We're guessing a few more posh ponytails will debut before the festival wraps up, but in the meantime, get inspiration for your own next-level style. On Kirbie: H&M.