Being a period piece, Becoming Elizabeth has gorgeous and elaborate costumes, which really informs their characters, according to Garai. “The great thing about this period is that there are sort of certain things that the costumes really teach you, like, you can't dress yourself,” the actress told the site. “You couldn't then, and you can't now, so you're never alone. Your wealth and status become kind of like literal obstacles to you, because you're weighed down by this clothing, which means that you can't move; you can't go anywhere on your own. It would have been incredibly difficult to have any kind of personal freedom. I think that the costumes are always reminding you of that when you're wearing them as the actor…So, it's a useful kind of reminder of the life that they led.”