…about the year 1818 in the book, which was the height of Regency fashion. You see in the 2005 movie how Colonial/Georgian fashion of 1790 crosses over into Regency of 1800-1825.
The Mom still wears her “out of style” Colonial/Georgian fancy dress that has her busts spilling out, while each daughter goes ‘so far’ as per personality, into the flimsy cotton dresses that were the current fashion of Regency.
In the script, the mom mentions how London was responsible for bringing the long sleeves into style, & how proud she is her daughters could be the first to premier it.
(photo: 2005 movie characters in costume for Austen’s “Pride & Prejudice”)