Looking for a way to mix your love for Old Hollywood with Halloween? Well, look no further, as we've rounded up the best looks for women from a few of the most iconic movies ever made. Whether you are looking for a '20s flapper-girl inspiration that eschews the traditional beaded dress or want a '40s style that could give Joan Crawford a run for her money, we've got the perfect costume for your tastes and needs. If you're looking for more modern Halloween inspiration, check out our roundup of the best pop culture costume ideas!