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.

Hemlines Shorter hemlines were one of the most dramatic changes in women’s style in the early 1900s, according to the Metropolitan Museum of Art. Susanna Buxton, the costume designer for "Downton Abbey," made sure to showcase the evolution of skirt length in costumes for the new season. "The only good thing to come out of the First World War was women's ankles," Buxton told the Telegraph in October 2011. Lady Mary Crawley, played by Michelle Dockery, stands at the train station in a scene from the second season of the show, with a hemline much shorter than would have been seen in the first few episodes before the start of the war. Nick Briggs/ITV for Masterpiece