You don’t need an updo to make jaws drop on the red carpet-at least according to Amanda Seyfried, who sported elegant, wavy tresses at the Academy Awards this year. Though this fresh style has the I-just-let-it-air-dry appearance, achieving sexy, undulating tresses is anything but a wash-and-go deal. Fortunately, you can give these steps a whirl at home, and accolades will surely follow. -Amy Gurvitz