Decked out in head-to-toe Mulberry, Kate Bosworth hit the label's Chateau Marmont fête channeling elegance and ease. We love that the actress opted for a cool army green as an alternative to the LBD, then added in luxe details, like a pair of statement pumps studded in jewels. Appealing to both that chic and super-accessible aesthetic, she finishes with a functional crossbody bag on a pretty chain strap and a few simple gold jewels. Looking for the same effortless party style? Just shop our editors' picks to channel Kate's look.