If you know of a fashionable tv show that you would like added to WornOnTV.net, please suggest it below and I'll see what I can do!
Game of Thrones: I adore this show but everything on Game of Thrones is custom made by their costume department. You can't just buy it. Check out etsy for cosplay items made by fans.
Downton Abbey, Masters of Sex, Mad Men: These period clothes are either vintage or custom made/altered. As with GoT, you can't just buy them in stores. Check out your local vintage stores, ebay and etsy.
Sex & The City, Friends: Unfortunately it is not practical to add old shows at all. Online shopping was barely around when these shows were filmed which means the items will be impossible to track down.