The magnificent new “Costumes of Downton Abbey®” exhibit at Winterthur Museum, Garden & Library will feature 40 historically inspired costumes from the award-winning PBS series, supplemented by photographs and vignettes inspired by the fictional program and by real life at Winterthur. Special features include lectures and workshops on entertaining in Britain and the United States. Runs from March 1, 2014 through Jan. 4, 2015.