Madame X Jigsaw Puzzle There's a reason why John Singer Sargent's portrait of Madame X continues to be one of fashion's most beloved references. That black gown! The dramatic pale skin! And yes, the strap that There's a reason why John Singer Sargent's portrait of Madame X continues to be one of fashion's most beloved references. That black gown! The dramatic pale skin! And yes, the strap that Madame X Skirt [Made to Order] Italian Stretch Satin Dark Garden Unique Corsetry, Inc.