The Regency fashion era can be divided into…

… 3.  1790-1805 (ish) had Greek and Roman influence.  Evolved from political factors such as the French Revolution, social developments like the counter revolutionary “Incroyables” fashion movement, and informational from what queens and empresses were wearing – this time period introduced “the little white dress”.

With discoveries in archaeology and new world awareness, 1806-1812 (ish) would bring Egyptian and Indian influence (among others), as the “little white dress” took on more ornamentation and long sleeves.

By the end of the 1820’s, Spanish rococco movement, and a desire to wear more than a thin piece of cotton had lots of trim, stiff skirts, changing waistlines, and a new world political environment.