A and B met at the Met, stopping at Sargent's Madame X . http://metmuseum.org/art/collection/search/12127
The nose is special, ... beezer is very close to bizi by Chinese, and there is a reason...
Sargent repainted the shoulder strap and kept the work for over thirty years. But He did that for the priciple of beauty, which can be seen in Hanzi beauty...
"What is it?"
"Hanzi beauty contains mostly in horizontal strokes, here in this painting, her sideway gaze forms a horizontal derection and needs an echo at the breast, so he eliminated a strap on purpose, which the public are ignorant of it and ridiculed...