User:SOTO/Forum Archive/The Reference Desk/@comment-6511852-20130302022313/@comment-1398253-20130303024931

They've never enforced a period clothing rule. In fact, in The Unquiet Dead, while Rose wore a period outfit when they went to the 19th century, the Doctor still wore his anachronistic leather jacket! And that was the THIRD episode of the revival, and the first historical.