Unless you're working with a pixie or super short bob, a messy bun is the easiest hairstyle for gals on the go. Although they look untidy at first glance, it's really the teeniest of details that make them look so effortless. Whether you're creating the illusion of extra volume with bobby pins, weaving in a braid or adding color, there are so many different ways to fashion a photo-ready top knot. Per usual, our favorite celebrities are feeding us the inspiration necessary to upgrade the one look that never goes out of style. Check out 15 A lister messy buns that are actually perfect; we guarantee you'll want to copy all of them!