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BEST BUN: Diane Kruger: We love Kruger's top knot and loose strands. Frankly, this woman can do no wrong. To create a similar look, flip hair upside down and tie into a high ponytail at the crown of your head. Flip upright and wrap hair into a bun around the elastic. Use a pair of spin pins for extra hold before pinning the style into place with bobby pins. photo credit: George Pimentel