It’s a new year—a new decade—and you know what that means. It’s time to look back at the past 365 days and see what we’ve learned. In terms of celebrity hair trends for 2019, nostalgic styles reigned supreme. The biggest celebs, influencers and musicians borrowed from years past and put a modern spin on space buns, pixies, bobs and even a mullet or two. Because everything old is new again and trends just end up coming back around. That’s a great thing as you’ll see from these killer looks.