Dress du Jour, Cannes Edition: Emma Stone is Darling in Oscar de la Renta

Emma Stone in Oscar de la Renta.

The actress' black lace dress was anything but basic at the 'Irrational Man' photocall.

The Dress: A black minidress from Oscar de la Renta's pre-fall 2015 collection, featuring a boatneck lace bodice and full, ruffled organza skirt.

The Wearer: Red-carpet style star Emma Stone.

See more Cannes: The Red-Carpet Arrivals

The Event: The Cannes photocall for Irrational Man, Stone's latest film directed by Woody Allen.

Why We Dig: So far the Cannes carpet has seen plenty of black, white and gray gowns, but despite the sea of colorless ensembles, Stone managed to make her monochrome look a standout. The playful organza ruffles, cascading from the waistline in a wavy pattern, give the otherwise simple silhouette a flirty, fun vibe, while the actress' two-toned Christian Louboutin pumps keep the ensemble polished. Despite the windy weather, which threatened a rather unladylike snafu, Stone looked as elegant as ever.