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 and feminine yet sleek and 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 them. No matter how you spin it, we've got our eye on Williams's styling prowess — see our favorite looks inside.