Ackermann’s Repository of Arts, April 1809.
This print is from the first year of publication for this magazine, which established a new bar of excellence in their fashion prints.
The text does not describe the bonnet, which appears to be a soft fabric helmet, that is, a bonnet with no stiffening in any part of it. The collar of the dress is also not described, though its extreme height is somewhat unusual for a woman. (Male collars of this period could be ridiculously high, preventing the gentleman from turning his neck at all.)
The print is described in the magazine as follows:
“A tunic of lilac silk, clasped down the front with gold ornaments; a cloak of the same colour attached, so as to unite behind, but to fall loose over the shoulders; fixed on the shoulders with golden ornaments: the cloak is lined with white or straw-coloured silk, and ornamented with a border of gold. Bonnet and boots of the same colour. Raised spotted muslin under-dress, with loose sleeves, bound at the arms and wrist. Gold necklace, and York tan gloves.”