While you are looking for vintage dress fabrics you may also come across vintage dress patterns. If reduced by 75% on a photocopy machine, a dress pattern with a 34" (86cm) bust will fit the 'quarter-scale' dolls made on Vintage Fashion Dolls at Central Saint Martins.

http://images.google.co.uk/images?hl=en&q=vintage+dress+patterns&gbv=2&aq=1&oq=vintage+dress