Some hairstyles are just pretty while some have the power to encapsulate an era. Think Jackie O, think Twiggy, think Farrah Fawcett, think Jennifer Aniston — each name conjures up images of a distinct 'do that had everyone running to their salons. Whether it was a pixie cut or a bouffant, hair was (and still is!) a way to make an immediate statement and even catapult a movement.Starting in the 1950s and wrapping up in the 2000s, let's cruise through the most unforgettable haircuts of decades past. We'll make our way from Elizabeth Taylor's jet black curls to Princess Diana's short straight cut and Reese Witherspoon's side-swept bangs.It's empowering to remember that a new style can change your appearance, your life, the world. Find out which iconic look was making waves the year you came into this world. And then make your next hair appointment accordingly.