Years ago, this would be 2001 or 2002, I had a very good mail day in which I received a copy of a fashion plate from La Belle Assemblee and a bound edition of The Lady's Monthly Museum from 1829. Much to my surprise, one of the dresses in one of the fashion plates was identical. I wrote about them on my webpage.
So imagine my surprise when a third copy came up on Pinterest! This one is from 1828, and was published as Costumes allemand et francois.
This dress was also redrawn in Costume in Detail
Here's a link to the pins--I couldn't post them next to each other, so a screenshot and Flickr it was!
Quite exciting, no?