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 Signature Madame X Skirt 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 Nora Dress in Nude by Madame X for Hire GlamCorner 13 Stars Who Channeled Madame X on the Red Carpet Red Carpet Looks Inspired By Art