No time to whip up a neat top knot? Use a beautiful lightweight scarf to cover up a messy bun. "Different fabrics do different things," says Cheryl. "Girls with curly hair should use a scarf with stretch, and a cotton scarf is better for girls with straight and fine hair [because] it doesn't crush the hair down." Once you have a scarf that works, wrap it tightly around your head (depending on the length of the fabric, you may need to go around more than once), and tie in a knot at the bun.