Hit up my
Pinterest - I have multiple boards of extants and portraits, but only for women's fashion because it's all for personal costuming research.
Keep in mind there's a big fashion shift in the 1790s into proto-regency (if you've seen any of Garrow's Law, Lyndsey Marshal's costumes are high fashion of this period). You start getting higher waisted gowns, which is not something you see at any earlier period in the century, more round gowns, thinner muslins. And that's not just a french revolutionary thing; it's apparently in English portraiture of that vintage. So don't be surprised when things suddenly don't look "typically georgian", as the difference between 1760 and 1780 is much smaller at first glance than between 1785 and 1795.
What kind of literature and what kind of life is the same question. - Tom Stoppard