Catherine,
I don't know if this is what you're seeking, but go to Michael Del Priore's site at
http://www.delprioreportraits.com and click on Studio, then click on Take the Tour. Scroll to the right and you'll see a flexible wooden mannequin holding a violin (probably not the right word for what that is). You can also click on on him for a slighly larger view and text where he says he uses that for clothing and posing.
Is that what you're wanting?