The Steamdress was the first domain dress that was based on the steam-punk and mechanical appearance of the Hatter's Domain, but not off the Mad Hatter himself.
Mercury - symbol for the planet Mercury; represents a winged helmet and caduceus (in astronomical terms) and means "Mind poised over divine spirit and matter." Mercury is associated with the alchemical element Mercury as well. It could also represent the Roman god of commerce, thievery, eloquence and science. It could also mean "a messenger." Identified with the Greek god Hermes.
Saturn - symbol for the planet Saturn; represents a sickle or scythe (in astronomical terms) and means "Matter taking precedence over mind or human spirit." Saturn is associated with the alchemical element Lead as well. It could also represent the Roman god of agriculture (the consort of Ops), and was believed to have ruled the Earth during an age of happiness and virtue. Identified with the Greek god Cronus.
The dress was influenced by steam-punk attire. It featured a neck-frill like collar, a Waspie waist cincher with a harness attached and leather, buckled fingerless gloves. Her boots remained the same, as did her stockings. The bow on the back of the dress was replaced with a clock, two mechanical wings and leather straps. The apron was also made of leather and features astronomical signs of Saturn and Mercury.
Hollow Yves took the form of a bow again, but much more stereotypical and similar to a classic bow. The skull was replaced with a green watch, that had the appearance of glass, and was surrounded by a bronze metal border. The fairly torn and worn bow was similar to steam-punk "bat" wings which stuck out on either side of the clock.
Although the dress was based on Hatter's Domain, it was not based on the Hatter himself. Alternatively, the Hattress was the Hatter-inspired DLC dress.