Numero uno should come as no surprise. While her acting career and love life had its ups and downs, the "Farrah Flip" is firmly seated as the biggest hair craze that ever was. Nearly every woman from every walk of life felt compelled to copy this untamed, layered hairstyle. Farrah, mostly thanks to her spectacular mane, was the biggest sex symbol since Marilyn Monroe. And, importantly, this style still looks great today.