Examined separately, the pieces she put together for a recent party at LA's Chateau Marmont wouldn't be the sort of stuff you'd think of as sexy. High-waisted, wide-leg silk-piqué pants and a putty-colored knit, both from Vionnet's Spring 2014 collection, are classy but lack the sheer panels or curve-flaunting cuts that commonly land in the sultry category (in fact, it reminded us a lot of a recent Sarah Hyland look that surprised us by its sophistication, not its sex appeal). When you get to see it on, though, it's easy to understand that sometimes the perfect come-hither outfit isn't as obvious as you'd think.
By hitting right at the natural waist, Jessica's pants showed off the slimmest part of the body and helped highlight (or create the illusion of) an hourglass shape. They rose to right under the crop top, showing barely any skin but really hammering home the idea that sometimes the steamiest feel comes from what you can't see. She accessorized with simple picks, rather than the chunky jewels or statement platforms a woman would obsess over but a man might read as overboard. In her case, she picked sexy Casadei sandals, a Fendi bag, and a wide cuff and hoop earrings by Tiffany & Co.
Dressing for the girls and a guy can be nearly impossible, but we're happy to report Jessica nailed it. To try her look out yourself, shop similar pieces below.