“While a costume was being created for me,” the actress Glenn Close has said. “I was creating the character who would wear it.” Close began collecting her costumes after her first movie, The World According to Garp (1982), and over the years amassed a collection of more than 800 pieces. In 2017, she donated the collection to the Sage Fashion Collection in the School of Art, Architecture + Design at Indiana University. The selection for the Jepson Center exhibition, in Savannah, numbers around 50 garments and accessories from 14 movies, and includes work by eminent costume designers such as Anthony Powell, Ann Roth, James Acheson, and Alexandra Byrne. The exquisite “Imperial yellow” ensemble that Close wore in Dangerous Liaisons (1988), as the ruthless Marquise de Merteuil, is one of the show’s fascinations. An intense color that France drew from China during the Rococo, that yellow was trimmed in the movie with black buttons and worn with a black hat and gloves—a sinister undertow. No one has done venom better than Glenn Close. —Laura Jacobs