For Martin Scorsese’s Killers of the Flower Moon, costume designer Jacqueline West immersed herself in researching early-1920s denizens of Osage County, Oklahoma. She visited museums commemorating plundering oil tycoons and watched rare black-and-white home movies commissioned by Osage families, wealthy from retaining mineral rights to their oil-rich reservation. Osage costume consultant Julie O’Keefe ensured the […]