Final answer:
In England, the concept of classical dress was propagated by the Neoclassicism movement which Inigo Jones contributed to by promoting Palladian architecture, influencing fashion to adopt classical principles seen in ancient Greek and Roman culture.
Step-by-step explanation:
The concept of classical dress in England during the 18th century can be linked to the movement of Neoclassicism, which was associated with 'radical' and liberal perspectives. This style was often contrasted with the later Gothic Revival style, which harbored 'traditional' sensibilities and was more conservative in nature. Such stylistic movements were reactions to industrialization and the prevalence of factory production, with some promoting medievalism and a return to a perceived golden age before industrialization.
In the context of this movement, Inigo Jones was a pivotal figure in promoting classical architecture through the introduction of Palladian architecture in England. Influenced by the works of Italian Renaissance architect Palladio, Jones's work helped to propagate classical aesthetics in English design, which also influenced fashion. The classical principles based on ancient Greek and Roman architecture were not just confined to buildings but were also emulated in attire, promoting a sense of timeless elegance which was then viewed as the 'classical dress.'
An example of this can be seen in the work of Neo-Classical architects who drew inspiration from ancient temples such as the Temple of Portunus, leading to constructions like the Temple of Harmony in Somerset, England. This revival of classical styles was a clear indication of a trend towards classical dressing in fashion as well, emphasizing simplicity, symmetry, and references to ancient times in clothing just like in architecture.