Diane Kruger attended a private dinner during Paris Couture Fashion Week wearing a beautiful 3.1 Phillip Lim tuxedo vest dress ($220, originally $695), which is currently 65 percent off at Nordstrom, with white ankle-strap Givenchy sandals and a gold watch. Vest dresses are a unique take on cocktail wear, so if you want to get in on the standout look, score Diane's exact number now. You can wear it at various occasions such as an outdoor wedding, a fabulous birthday party, or even during a night out over jeans or leggings. As shown on the model, you can also sport the vest open over a tank. Then come Fall, throw it on over a turtleneck, tights, and booties for a fresh take on cold-weather style.