I love these kind of pants, but they're hard to find and I barely remember if I got more than two of them.
JacciRocker/DigitalDollies has separated one of the AF outfits from the Art Nouveau Store set, here:
https://digitaldollies.dreamwidth.org/4771.html. Just a word of warning: the way these meshes are mapped, cropped tops and high-waisted pants don't always work together nicely.
Trapping's Drommer pants, found in the 'Ont Om Tid' folder here:
http://simfileshare.net/folder/12851/
My game's Download folder is in Fix These New Things mode now, so I can't load the game to see if I got more than this at the moment.