This Fall, let the femme fatale in you thrive . . . at least when it comes to your choice of hair accessories. Recently, Rachel Zoe rocked a black leather turban paired with fully rimmed eyeliner and a red lip look (both well-known, bad-girl staples). And though lace can be cutesy, too: Poppy Delevingne's animalistic headband skewed more sex kitten than house cat. And then there's British model Portia Freeman, who upped the ante with a spiked headpiece. Get a similar style with the Sonia Kashuk Studly Haute Hair Set ($10), and let your tough side rule.