Spencer star gave the look a bit of an edge by styling her hair in an effortlessly undone up-do. If this is any indication of how she'll dress to her upcoming wedding to , we're here for it.Kristen Stewart attends the 33rd Annual Producers Guild Awards in Los Angeles, California. Kristen Stewart's not the only one embracing as formal wear. On March 18, attended the SXSW premiere of her new film Cha Cha Real Smooth wearing a sheer nude corset, which she paired with a '70s-inspired linen pantsuit.