https://www.posetteforever.com/viewtopic.php?f=34&t=3869&p=44635#p44635
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Maelstromme
Monday, 27 October 2014, 09:56 AM

Re: Looking For More Posette Accessories, Namely A Shawl.
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http://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=&url=http%3A%2F%2Fwww.artvalue.com%2Fauctionresult--french-school-18-france-portrait-of-a-seated-woman-wea-1231785.htm&ei=qhNOVJHeE8ygyASdh4KQBg&bvm=bv.77880786,d.aWw&psig=AFQjCNE9EyGD_7yxLR1g_cMu9BQAhmMbgw&ust=1414489386717113

This is the best interpretation I can find. Shawls are worn around the shoulders and usually tied around the front.  They can criss-cross over the breasts or simply be worn across the back held in place in the crooks of the arm. knitted or lace or silk mainly.