Hi Silverguy:
I just spent a month in the US on vacation, and doing as a girl does, shopped till I dropped.
I have a few long skirts, but mostly into skirts that come just below the knee.
I did notice the fashion trend this fall seems to be long skirts.
While I have no idea of your size, I was into stores such as Dress Barn, Tabi, Express, Pennys, Wal-Mart, Heights, Fashion bug to mame a few, and they all appeared to be long for this year.
I am sure if you go to a city with a large shopping center you will be able to find what you like.
By the Way I did go shopping fully femme all the time and wearing a skirt part of the time, the feeling of freedom wearing a skirt was great. When looking for and trying on skirts, I was treated non other than a lady out shopping
Good Luck
Denise