Yesterday we investigated the benefits and perils of clip-on bangs. For our second installment of The Cut’s Bangs Week, we explore major bang styles  through the decades, from the helmet-style bangs of Louise Brooks and Christina Ricci to the feathered, rocker bangs of Joan Jett and Patti Hansen, to the top-knot-and-bangs combo favored by Nicole Ricci and Susie Bubble. Click through to see how Spock and Rooney Mara are actually quite like one another.