A new issue of Empire reveals Chadwick Boseman and Sienna Miller’s 21 Bridges salaries were linked in a surprising way. Before Boseman passed away aged 43 following a four-year private battle with colon cancer in August, the iconic Black Panther star was always showing up as a hero even beyond the Marvel Universe. His role as a producer on 21 Bridges was no exception, as he decided to share the wealth—quite literally—with his co-star, Miller, in order to get her on board for the project.