The ladies of “Downton Abbey.” (Nick Briggs/PBS)

The long gloves and formal frocks worn by the Crawley daughters, as well as the ensembles donned by other “Downton Abbey” characters, are so striking that they may have inspired a World War I-era fashion trend.

Of course, it’s difficult to prove that designers like Ralph Lauren and Dior were directly influenced by the show’s costumes. But if you look at the photos from “Downton” along with images from recent runway shows — all viewable in the gallery below — it’s easy to spot some aristocratic style elements in common.

View Photo Gallery: The popular period drama has reintroduced WWI-era style to international audiences and has fueled several fashion trends seen on runways and celebrities this year.