Who: Olivia Wilde.
When: Thursday, April 14.
Where: The after party for the premiere of The Devil and the Deep Blue Sea at the Tribeca Film Festival.
Why: This look has all the elements of classic Elie Saab: Luxurious lace detailing, contrasting panels, a daring hint of skin (here, perhaps even more daring than usual, being entirely unlined). Yet Wilde takes that Saab prototype and exposes the sweet-yet-edgy aesthetic even further with a bit of leather and platform heels.