While we enjoy watching her character Marnie on the HBO show Girls, it's Allison Williams's flawless red-carpet style that has us sold. From premieres to parties to award shows, Williams has wowed in high-wattage hues, statement jewels, and form-flattering confections so perfect you'd think they were constructed specifically for her. To top it all off, she's become the style poster child for classic femininity meets sleek, fashion-forward silhouettes. She blends no-fail shapes with cool designer names, and vice-versa, she opts for pieces with a slightly edgier feel and an all-American label behind it. No matter how you spin it, we've got our eye on Williams's styling prowess - see our favorite looks inside.