Queen Victoria wears a coiffure built out to the sides, a
pelerine, and a moiré pattern dress in this Chalon portrait. Chalon also
portrayed her mother, Victoria, Duchess
of Kent. Alfred Chalon's Wikipedia article is here.
The excellent fashion-era.com
site has this about the pelerine, "Pelerine collars came in
several variations. Their similarity was that each covered the very wide
shoulders and could aid modesty. The first style was a fine white collar
embroidered or lace trimmed and which looked like a cape. The pelerine grew
wider as it spread over the increasing shoulder line of gigot sleeves. It
accentuated the shoulder width and made the waist of the 1830s look very small
and was a popular feature of dress in the Romantic period.
The width of the lace pelerine reached about 31 inches when at its
widest fashion and the pelerines were sometimes attached to a chemisette which
was a sleeveless side opened blouse fastened at the waist. Another name for
this item was a tulle canezou."