Although the term 'dandy' today carries connotations of effete mannerisms and fussiness, in Regency times the word described men of quite a different character. I particularly like Thomas Raikes's description:

“The manners of the dandies were in themselves a charm, retained by some through infirmity and age. Their speech was pleasant, their language thorough-bred, their raillery conciliating, their satire what they intended it to be; many among them highly gifted; doing all that they did well; the less apt always to the point, letting it alone; without enthusiasm, without allusions — a school of gentlemen, liberal and open-handed; ephemeral as youth and spirits, yet marked by this endearing quality, that they remained, with few exceptions, true and loyal friends, tested through years of later adversity, and even death’s oblivion."

Chief among the dandies was, of course, Beau Brummell. His immediate circle of friends, Lord Alvanley, the Duke of Argyll, Lord Barrymore, Lord Bedford, the Earl of Sefton, the Duke of Devonshire, Lord Manners, "Poodle" Byng, and the Duke of Beaufort, formed the nucleus of dandyism.

And ever since their day, men of taste have resisted dressing like peacocks and have adopted a strong, dark, and simple style of dress, quite intentionally allowing their women to bloom, as is only correct.