It's official: Diane Kruger never gets it wrong. She pulls together the coolest kind of travel style one day, then shows off couture the next, with just as much ease. Arriving in Paris last night for the Jaeger-LeCoultre Place Vendome boutique opening, Kruger didn't just opt for the typical party dress — but slipped into a retro-inspired Jason Wu jumpsuit for the occasion. Sure, the style pro can wear just about anything, but truthfully, you can wear this one, too. Thanks to a formfitting (but not too body-conscious) silhouette and a defined waistline, which a belt helps to accentuate, this fit is designed to flatter a woman's body and help shape and define curves. Add to that an open halter neckline — a secret weapon in elongating the frame — and it's a look that actually lends itself to a lot more body types than just Diane's, plus a wealth of holiday occasions. The only thing you need to finish off the same look for your own cocktail party agenda is a few of Kruger's key add-ons: a sexy heel, minaudière, and a hot red lip. Just shop our editors' picks below to get started.