When Louis Vuitton and Yves Saint Laurent send models down the runway with a similar hairstyle, you can guarantee that it won't be long until celebs start wearing and then a Trend is born. And that's what we're seeing today. TODAY, people. The style is a cross between rope braids and an up 'do. Hair is twisted and rolled in on itself on one or both sides of the head, working its way into a French twist style up back. Celebs are adapting it—keeping the side twists the same but securing them in a bun at the nape of the neck. Much easier for you to copy. So far we've seen Diane Kruger wear the style to ELLE's Women in Hollywood Tribute last month, Gwen Stefani wear it to the MOCA Gala and now Olivia Wilde rock a super-slick version at the Tron: Legacy 3D press conference in Tokyo yesterday. It's perfect for party season—on-trend and super fresh. Will YOU be busting out the side twists sometime soon?