Dress du Jour: Kate Mara Is Angelic in Valentino

Kate Mara - P 2015

Kate Mara - P 2015

The actress brought class to Sin City with an elegant white frock.

The Dress: A white long-sleeve, tiered chiffon Valentino dress featuring snowflake and polka-dot embroidery with a loosely tied scarf at the neckline.

The Wearer: Kate Mara

See more See All the Looks from the 2015 Tribeca Film Festival 

The Event: At the Will Rogers Pioneer of the Year dinner, honoring Jim Gianopulos, on Wednesday evening at Caesar's Palace in Las Vegas during this year's CinemaCon.

Why We Dig: Vegas dressing usually follows the mantra, "the tighter and brighter, the better," but Mara (thankfully) doesn't subscribe to such dress codes. Instead, the Fantastic Four actress chose to wear a loosely fitted textured number by Valentino. The shorter hemline, sheer point d'esprit fabric and Mara's dark smokey eye still give the overall ensemble a hint of sex appeal, but her the long-sleeves and metallic gold accessories make for a timelessly elegant look.